HEADPHONES · YOUR NEXT FACE-OFF

Nothing Ear (3) vs Sennheiser HD 650

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

Nothing Ear (3)

6974434226791 · White · UK

Full product profile Official image

Exact model & source notes

Nothing Ear (3) (store SKU 6974434226791 in White, the same SKU on the UK and US stores) are stem-style true wireless earbuds with real-time adaptive ANC up to 45 dB, Bluetooth 5.4 with LDAC and dual connection, and an aluminium-based case that adds a separate 'Super Mic' for calls and voice notes.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHICH SUITS YOU?

Choose the Nothing Ear (3) for

A wireless connection

Choose the Sennheiser HD 650 for

A wired connection

Built from verified specifications that differ. Not a rating or a recommendation.

See the 4 verified differences

THE CONTENDER

Sennheiser HD 650

508825 · titanium-silver · 300 ohm · standard 3 m unbalanced cable

Full product profile Official image

Exact model & source notes

The HD 650 is an open-back, over-ear headphone with a 42 mm dynamic driver rated 10–41,000 Hz (−10 dB) at 300 ohms. It comes with a detachable 3 m 6.35 mm cable and a 3.5 mm adapter; balanced cables are optional extras.

Specifications checked 11 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

Nothing Ear (3) UK & US retailers

UK & US price history: no verified listing yet

Sennheiser HD 650 UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

FEATURES SIDE BY SIDE6 topics

Yes and No describe the listed feature. Missing evidence stays unverified.

SELECTED TOPIC

01 / 06

Open-back design

Open-back earcups are not sealed. Start here if your listening space is quiet; this construction is not a sound-quality rating.

Nothing Ear (3)Not verified

Sennheiser HD 650Yes

Open-back. Manufacturer specification

Source 1

Choose your must-haves

Start with your listening environment. Open and closed earcups suit different surroundings. A closed back is not the same as active noise cancellation. Check the exact cable and headphone output. We do not turn impedance, driver size or unpaired lab results into a sound-quality score.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

4 verified differences, most decision-relevant first. Missing information stays separate.

Wired / wireless connections

Nothing Ear (3)Bluetooth 5.4 (AAC, SBC, LDAC) with dual connection; USB-C and wireless charging on the case

Sennheiser HD 650Wired analogue; detachable 6.35 mm unbalanced cable and included 3.5 mm adapter

Sources

Nothing Ear (3)

Manufacturer specification · Charging to full takes 70 minutes over USB-C or 120 minutes wirelessly, per Nothing.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

Manufacturer specification · Optional 4.4 mm and XLR-4 balanced cables are sold separately.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Check the exact configuration and source conditions for your use.

Drivers

Nothing Ear (3)12 mm dynamic driver, 32 Ω, PMI + TPU diaphragm

Sennheiser HD 65042 mm dynamic transducer with 38 mm diaphragm and aluminium voice coil; acoustic mesh and hand-paired transducers within stated ±1 dB tolerance

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

Manufacturer specification · The driver, diaphragm and voice-coil sizes describe different parts.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Check whether the diameter describes the complete transducer or only its diaphragm. Different labels and driver sizes do not establish better sound.

Wearing style

Nothing Ear (3)In-ear, true wireless (stem earbuds with silicone ear tips)

Sennheiser HD 650Over-ear (circumaural), open-back dynamic headphones

Sources

Nothing Ear (3)

Manufacturer specification · Two earbuds and a charging case; three pairs of ear tips are in the box.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

Manufacturer specification

Sennheiser HD 650 — manufacturer specifications

Check the exact configuration and source conditions for your use.

Frequency response

Nothing Ear (3)20 Hz – 40 kHz

Sennheiser HD 65010–41,000 Hz (−10 dB)

Sources

Nothing Ear (3)

Manufacturer specification · Listed as 'RF' under Sound in Nothing's specification table.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

Manufacturer specification · The manual rates 10–41,000 Hz at −10 dB; Sennheiser's UK feature list quotes 12–41,000 Hz without a threshold.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Range endpoints need their stated threshold. They do not describe response flatness or prove better bass, detail or sound quality.

Missing or non-comparable evidence (32)

Acoustic design

Nothing Ear (3)Not verified

Sennheiser HD 650Open-back

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Active noise cancellation

Nothing Ear (3)Yes

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Real-time adaptive ANC up to 45 dB (Nothing's laboratory theoretical maximum) with a Transparency mode.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

The reviewed exact manufacturer sources establish open-back dynamic construction but do not explicitly state whether active noise cancellation is present or absent. Acoustic mesh, an absorber or an omitted ANC control does not establish ANC=false. · Manufacturer specification

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Microphone

In Visual facts

Nothing Ear (3)Yes

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Three MEMS microphones per earbud plus a voice pickup unit (VPU) per earbud; the charging case also contains a dual-microphone 'Super Mic' activated with its Talk button.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

The reviewed exact manufacturer sources do not explicitly establish microphone presence or absence for the supplied configuration. Stereo audio conductors and omitted controls are not proof that no microphone exists. · Manufacturer specification

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery life

Nothing Ear (3)AAC: earbuds up to 5.5 hours with ANC on and up to 10 hours with ANC off; with the charging case up to 22 hours with ANC on and up to 38 hours with ANC off. LDAC: earbuds up to 3.5 hours with ANC on and 5.5 hours with ANC off (no case total given for LDAC).

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Nothing laboratory results at 25 °C, 50% volume, AAC, other features at default settings; actual life varies with volume, calls, source and features. Talk time is separately listed (earbuds 4 h ANC on / 5 h ANC off; with case 15.5 h / 19 h).

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

The reviewed exact manufacturer sources do not explicitly give battery life or state that no battery is required for operation. A wired analogue connection is known; the generic disposal wording “battery/rechargeable battery (if applicable)” establishes neither presence nor absence. · Manufacturer specification

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Nominal impedance

Nothing Ear (3)Not verified

Sennheiser HD 650300 ohm

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Nominal impedance; check that your amplifier or audio source can drive this load.

Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Companion app

Nothing Ear (3)Nothing X app: custom EQ with profile sharing (8-band equaliser), Personal Sound profile (Audiodo), Dynamic Bass Enhancement, customisable controls, find my earbuds, dual connection, ear tips fit test and firmware updates

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Nothing X is for Android 6.0 and above and iOS 13 and above; on Nothing OS 1.5.6 and higher the settings are built into the phone.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery capacity

Nothing Ear (3)Earbuds 55 mAh each; case 500 mAh

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Included and optional cables

Nothing Ear (3)Not verified

Sennheiser HD 650Detachable 3 m unbalanced cable included; 4.4 mm and XLR-4 cables optional

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Optional cables are sold separately; balanced cables need a balanced headphone output.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Included cable length

Nothing Ear (3)Not verified

Sennheiser HD 6503 m

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Length of the supplied cable.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Bluetooth codecs

Nothing Ear (3)AAC, SBC, LDAC (Hi-Res certified)

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Supplied plug configuration

Nothing Ear (3)Not verified

Sennheiser HD 6506.35 mm unbalanced plug with included 6.35 mm-to-3.5 mm adapter

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Needs a matching headphone output.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated contact pressure

Nothing Ear (3)Not verified

Sennheiser HD 650Approximately 6.0 N ±1.0 N

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Nominal clamping force; individual fit and comfort can differ.

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Controls

Nothing Ear (3)Pinch sensor on each earbud: pinch for play/pause and answer/end call; double pinch for next track or reject call; triple pinch for previous track; hold for noise cancellation/transparency; pinch and hold for volume up/down. Case Talk button: press and hold during a call to use Super Mic, double press to lock it in; outside calls, press and hold for Essential Space (Nothing OS) or the voice assistant (iOS/Android).

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Next/previous track, noise cancellation/transparency, volume and the Talk button's non-call actions are marked customisable in the Nothing X app. Essential Space is available only on select Nothing devices with the Essential Key.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated total harmonic distortion

Nothing Ear (3)Not verified

Sennheiser HD 650≤0.05% at 1 kHz, 1 V rms

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Driver diameter

Nothing Ear (3)Not verified

Sennheiser HD 65042 mm

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Complete transducer diameter; the diaphragm is 38 mm.

Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Ear pads

Nothing Ear (3)Not verified

Sennheiser HD 650Velour ear pads; replaceable

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Replacement procedure shown in the manual.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Quick pairing

Nothing Ear (3)Google Fast Pair and Microsoft Swift Pair

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Fast Pair works on supported Android devices running Google Play services 11.7+ (back to Android 6.0); Find My and device renaming support need Android 10 or later.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Frequency equalisation

Nothing Ear (3)Not verified

Sennheiser HD 650Diffuse-field equalised

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

In-ear detection

Nothing Ear (3)Yes

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Supplied 3.5 mm adapter

Nothing Ear (3)Not verified

Sennheiser HD 650Yes

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Manual package contents explicitly includes a 6.35 mm-to-3.5 mm stereo adapter.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated long-term input power

Nothing Ear (3)Not verified

Sennheiser HD 650Maximum 500 mW under EN 60-268-7

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Maximum input the headphones can handle, not the amplifier power they need.

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Low Lag Mode

Nothing Ear (3)Low Lag Mode (latency as low as 110 ms)

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Latency can be reduced to as low as 110 ms only when the earbuds are paired with Nothing phones with Game Mode turned on (footnote 3).

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Static magnetic field at the surface

Nothing Ear (3)Not verified

Sennheiser HD 6501.8 mT

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Static magnetic field at the headphone surface.

Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Multipoint (dual connection)

Nothing Ear (3)Yes

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Nothing notes that turning Dual Connection on affects Super Mic functionality; Super Mic is prioritised with Dual Connection off by default.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Operating temperature

Nothing Ear (3)Not verified

Sennheiser HD 650−10 °C to +55 °C

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated sensitivity

Nothing Ear (3)Not verified

Sennheiser HD 650103 dB SPL at 1 kHz, 1 V rms

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Rated at 1 kHz with 1 V rms; not directly comparable with dB/mW ratings.

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Replaceable parts

Nothing Ear (3)Not verified

Sennheiser HD 650Detachable cable and replaceable ear pads; headband padding via repair service

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Replacement procedures are in the manual; spare-part availability varies.

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Spatial audio

Nothing Ear (3)Static Spatial Audio

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Listed under Sound features. Nothing describes it as creating a 3D soundscape; the pages do not mention head tracking.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Dust, sweat and water resistance

Nothing Ear (3)IP54 (earbuds and case)

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Weight per earbud

Nothing Ear (3)5.2 g

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification · Each earbud. Nothing lists 71.4 g for the earbuds and case together (buds-and-case weight), not the case alone.

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Dimensions

Nothing Ear (3)Each earbud 30.5 x 21.5 x 20.75 mm; charging case 55.5 x 55.5 x 22.25 mm (height x width x depth)

Sennheiser HD 650Not verified

Sources

Nothing Ear (3)

Manufacturer specification

Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications

Sennheiser HD 650

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Weight

Nothing Ear (3)Not verified

Sennheiser HD 650260 g

Sources

Nothing Ear (3)

No source recorded for this side.

Sennheiser HD 650

Manufacturer specification · Approximate, without the cable.

Sennheiser HD 650 — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

0 shared fields have the same recorded value.

YOUR HEADPHONES. YOUR RULES.

Check against your must-haves

Feature matching for the features you select. It doesn’t rate sound or comfort.

Start with your listening setup.

Choose a starting point, then fine-tune your must-haves.

FINE-TUNE THE DETAILS

Your essentials.

These shortcuts select the features shown above. Check the fit against your own equipment and listening space.

A feature match describes the selected requirements. It doesn’t rate sound or comfort.

Open-back designFor a quiet listening spaceClosed-back designAn enclosed outer earcupDetachable cableUnplug the cable at the headphonesBuilt-in microphoneFor calls and voice chatActive noise cancellationNot the same as a closed back

YOUR CHOICE

Nothing Ear (3)

Select a feature to check your fit.

YOUR CHOICE

Sennheiser HD 650

Select a feature to check your fit.

Feature matching, not a sound-quality score. The specification table links to the evidence for each feature.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Nothing Ear (3)

What it brings

For calls, each earbud has three MEMS microphones and a voice pickup unit that senses vibrations from your jawbone, and the case holds Super Mic: two beamforming MEMS microphones you switch to with the case's Talk button, which Nothing recommends holding about 5 cm from your mouth in loud places.
Manufacturer source
The case charges both over USB-C and wirelessly, and with AAC Nothing rates up to 10 hours per charge (ANC off) and 38 hours with the case.
Manufacturer source

What to check

Using LDAC cuts rated earbud playback to 3.5 hours with ANC on (5.5 hours off), against 5.5 and 10 hours with AAC.
Manufacturer source
Dust and water resistance is IP54, and Nothing says turning on dual connection affects Super Mic behaviour, so the two features do not fully work together by default.
Manufacturer source

Sennheiser HD 650

What it brings

Its 42 mm dynamic driver has hand-paired transducers matched within ±1 dB, and the supplied 6.35 mm cable with 3.5 mm adapter fits both common socket sizes. The cable and velour ear pads are replaceable.
Manufacturer source Manufacturer source

What to check

At 300 ohms, check that your amplifier or audio source can drive the headphones properly. The documented connection uses the supplied analogue audio cable and 3.5 mm adapter.
Manufacturer source Manufacturer source
Sennheiser describes the intended use as listening at home with high-quality audio systems. The 4.4 mm balanced and XLR-4 cables are optional accessories.
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

36 of 36 specifications Sources in each row

Source-backed specifications for Nothing Ear (3) and Sennheiser HD 650
Specification	Nothing Ear (3)	Sennheiser HD 650

Wearing styleDifferent Sources Nothing Ear (3) Manufacturer specification · Two earbuds and a charging case; three pairs of ear tips are in the box. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 Manufacturer specification Sennheiser HD 650 — manufacturer specifications	In-ear, true wireless (stem earbuds with silicone ear tips)	Over-ear (circumaural), open-back dynamic headphones
Weight per earbud Sources Nothing Ear (3) Manufacturer specification · Each earbud. Nothing lists 71.4 g for the earbuds and case together (buds-and-case weight), not the case alone. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	5.2 g	Not provided
Dimensions Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Each earbud 30.5 x 21.5 x 20.75 mm; charging case 55.5 x 55.5 x 22.25 mm (height x width x depth)	Not provided
Dust, sweat and water resistance Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	IP54 (earbuds and case)	Not provided
Weight Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Approximate, without the cable. Sennheiser HD 650 — manufacturer specifications	Not provided	260 g
Acoustic design Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification Sennheiser HD 650 — manufacturer specifications	Not provided	Open-back
Replaceable parts Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Replacement procedures are in the manual; spare-part availability varies. Sennheiser HD 650 — manufacturer specifications	Not provided	Detachable cable and replaceable ear pads; headband padding via repair service
Ear pads Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Replacement procedure shown in the manual. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	Velour ear pads; replaceable
Rated contact pressure Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Nominal clamping force; individual fit and comfort can differ. Sennheiser HD 650 — manufacturer specifications	Not provided	Approximately 6.0 N ±1.0 N

Wired / wireless connectionsDifferent Sources Nothing Ear (3) Manufacturer specification · Charging to full takes 70 minutes over USB-C or 120 minutes wirelessly, per Nothing. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 Manufacturer specification · Optional 4.4 mm and XLR-4 balanced cables are sold separately. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Bluetooth 5.4 (AAC, SBC, LDAC) with dual connection; USB-C and wireless charging on the case	Wired analogue; detachable 6.35 mm unbalanced cable and included 3.5 mm adapter
Battery life Sources Nothing Ear (3) Manufacturer specification · Nothing laboratory results at 25 °C, 50% volume, AAC, other features at default settings; actual life varies with volume, calls, source and features. Talk time is separately listed (earbuds 4 h ANC on / 5 h ANC off; with case 15.5 h / 19 h). Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 The reviewed exact manufacturer sources do not explicitly give battery life or state that no battery is required for operation. A wired analogue connection is known; the generic disposal wording “battery/rechargeable battery (if applicable)” establishes neither presence nor absence. · Manufacturer specification Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	AAC: earbuds up to 5.5 hours with ANC on and up to 10 hours with ANC off; with the charging case up to 22 hours with ANC on and up to 38 hours with ANC off. LDAC: earbuds up to 3.5 hours with ANC on and 5.5 hours with ANC off (no case total given for LDAC).	Not listed by the manufacturer
Bluetooth codecs Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	AAC, SBC, LDAC (Hi-Res certified)	Not provided
Multipoint (dual connection) Sources Nothing Ear (3) Manufacturer specification · Nothing notes that turning Dual Connection on affects Super Mic functionality; Super Mic is prioritised with Dual Connection off by default. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Yes	Not provided
Low Lag Mode Sources Nothing Ear (3) Manufacturer specification · Latency can be reduced to as low as 110 ms only when the earbuds are paired with Nothing phones with Game Mode turned on (footnote 3). Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Low Lag Mode (latency as low as 110 ms)	Not provided
Quick pairing Sources Nothing Ear (3) Manufacturer specification · Fast Pair works on supported Android devices running Google Play services 11.7+ (back to Android 6.0); Find My and device renaming support need Android 10 or later. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Google Fast Pair and Microsoft Swift Pair	Not provided
Battery capacity Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Earbuds 55 mAh each; case 500 mAh	Not provided
Included cable length Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Length of the supplied cable. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	3 m
Supplied plug configuration Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Needs a matching headphone output. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	6.35 mm unbalanced plug with included 6.35 mm-to-3.5 mm adapter
Included and optional cables Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Optional cables are sold separately; balanced cables need a balanced headphone output. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	Detachable 3 m unbalanced cable included; 4.4 mm and XLR-4 cables optional

DriversDifferent Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 Manufacturer specification · The driver, diaphragm and voice-coil sizes describe different parts. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	12 mm dynamic driver, 32 Ω, PMI + TPU diaphragm	42 mm dynamic transducer with 38 mm diaphragm and aluminium voice coil; acoustic mesh and hand-paired transducers within stated ±1 dB tolerance
Spatial audio Sources Nothing Ear (3) Manufacturer specification · Listed under Sound features. Nothing describes it as creating a 3D soundscape; the pages do not mention head tracking. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Static Spatial Audio	Not provided
Frequency responseDifferent Sources Nothing Ear (3) Manufacturer specification · Listed as 'RF' under Sound in Nothing's specification table. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 Manufacturer specification · The manual rates 10–41,000 Hz at −10 dB; Sennheiser's UK feature list quotes 12–41,000 Hz without a threshold. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	20 Hz – 40 kHz	10–41,000 Hz (−10 dB)
Nominal impedance Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Nominal impedance; check that your amplifier or audio source can drive this load. Sennheiser HD 650 — exact UK article and product details	Not provided	300 ohm
Rated sensitivity Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Rated at 1 kHz with 1 V rms; not directly comparable with dB/mW ratings. Sennheiser HD 650 — manufacturer specifications	Not provided	103 dB SPL at 1 kHz, 1 V rms
Rated long-term input power Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Maximum input the headphones can handle, not the amplifier power they need. Sennheiser HD 650 — manufacturer specifications	Not provided	Maximum 500 mW under EN 60-268-7
Frequency equalisation Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification Sennheiser HD 650 — manufacturer specifications	Not provided	Diffuse-field equalised
Rated total harmonic distortion Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	≤0.05% at 1 kHz, 1 V rms
Driver diameter Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Complete transducer diameter; the diaphragm is 38 mm. Sennheiser HD 650 — exact UK article and product details	Not provided	42 mm

Microphone Sources Nothing Ear (3) Manufacturer specification · Three MEMS microphones per earbud plus a voice pickup unit (VPU) per earbud; the charging case also contains a dual-microphone 'Super Mic' activated with its Talk button. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 The reviewed exact manufacturer sources do not explicitly establish microphone presence or absence for the supplied configuration. Stereo audio conductors and omitted controls are not proof that no microphone exists. · Manufacturer specification Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Yes	Not listed by the manufacturer
Active noise cancellation Sources Nothing Ear (3) Manufacturer specification · Real-time adaptive ANC up to 45 dB (Nothing's laboratory theoretical maximum) with a Transparency mode. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 The reviewed exact manufacturer sources establish open-back dynamic construction but do not explicitly state whether active noise cancellation is present or absent. Acoustic mesh, an absorber or an omitted ANC control does not establish ANC=false. · Manufacturer specification Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Yes	Not listed by the manufacturer

Companion app Sources Nothing Ear (3) Manufacturer specification · Nothing X is for Android 6.0 and above and iOS 13 and above; on Nothing OS 1.5.6 and higher the settings are built into the phone. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Nothing X app: custom EQ with profile sharing (8-band equaliser), Personal Sound profile (Audiodo), Dynamic Bass Enhancement, customisable controls, find my earbuds, dual connection, ear tips fit test and firmware updates	Not provided
Controls Sources Nothing Ear (3) Manufacturer specification · Next/previous track, noise cancellation/transparency, volume and the Talk button's non-call actions are marked customisable in the Nothing X app. Essential Space is available only on select Nothing devices with the Essential Key. Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Pinch sensor on each earbud: pinch for play/pause and answer/end call; double pinch for next track or reject call; triple pinch for previous track; hold for noise cancellation/transparency; pinch and hold for volume up/down. Case Talk button: press and hold during a call to use Super Mic, double press to lock it in; outside calls, press and hold for Essential Space (Nothing OS) or the voice assistant (iOS/Android).	Not provided
In-ear detection Sources Nothing Ear (3) Manufacturer specification Nothing (UK store, nothing.tech) — Ear (3) product page with technical specifications Nothing (US store, us.nothing.tech) — Ear (3) product page with technical specifications Sennheiser HD 650 No source recorded.	Yes	Not provided

Supplied 3.5 mm adapter Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Manual package contents explicitly includes a 6.35 mm-to-3.5 mm stereo adapter. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	Yes

Static magnetic field at the surface Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification · Static magnetic field at the headphone surface. Sennheiser HD 650 — manufacturer specifications Sennheiser HD 650 — exact UK article and product details	Not provided	1.8 mT
Operating temperature Sources Nothing Ear (3) No source recorded. Sennheiser HD 650 Manufacturer specification Sennheiser HD 650 — manufacturer specifications	Not provided	−10 °C to +55 °C

First product manufacturer source Second product manufacturer source

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Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.