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MICE · YOUR NEXT FACE-OFF

Razer DeathAdder Essential vs Logitech Signature M650

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

Compared products

YOUR FIRST CHOICE

Razer DeathAdder Essential

Black · RZ01-03850100-R3M1 · UK manufacturer configuration

Razer DeathAdder Essential wired mouse in black, front-left angled view showing the two left side buttons, green-lit scroll wheel and cable
Full product profile Official image
Exact model & source notes

The DeathAdder Essential is Razer's entry-level wired right-handed ergonomic mouse: 96 g, a 6,400 DPI optical sensor, five programmable buttons and mechanical switches rated for 10 million clicks.

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 Razer DeathAdder Essential for

  • A wired connection
  • Longer stated body length: 127.3 mm vs 108.2 mm

Choose the Logitech Signature M650 for

  • A wireless connection
  • Shorter stated body length: 108.2 mm vs 127.3 mm
Built from verified specifications that differ. Not a rating or a recommendation.
See the 8 verified differences
THE CONTENDER

Logitech Signature M650

Graphite · standard size · 910-006253 · UK manufacturer configuration

Logitech Signature M650 wireless mouse in graphite, top view showing the SmartWheel, green status light and logi logo
Full product profile Official image
Exact model & source notes

The Logitech Signature M650 is a quiet-clicking, AA-powered wireless mouse for small-to-medium hands, with SmartWheel scrolling, a Logi Bolt receiver or Bluetooth, and five buttons.

Specifications checked 28 Sept 2026.

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

Manufacturer specifications

Razer DeathAdder Essential UK & US retailers

UK
Search Amazon UKSearch eBay UK
US
Search Amazon USSearch eBay US

UK & US price history: no verified listing yet

Logitech Signature M650 UK & US retailers

UK
Search Amazon UKSearch eBay UK
US
Search Amazon USSearch eBay US

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.
SPECIFICATIONS SIDE BY SIDE8 topics
SELECTED TOPIC
01 / 08

Connections

Check the exact configuration and source conditions for your use.

Razer DeathAdder EssentialWired

Manufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred.

Source 1Source 2
Logitech Signature M650Bluetooth Low Energy or Logi Bolt USB receiver (included, stored in the mouse)

Manufacturer specification · Wireless range 10 m, per Logitech.

Source 1Source 2Source 3
Explore the full specifications

Choose the grip, then check the connection. Left-side thumb controls are not a mirrored left-handed layout. Check the receiver or USB connection, battery requirements and your preferred shape. DPI is tracking resolution, not an accuracy score; no gaming winner is inferred.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

8 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.

Connections

In Visual facts
Razer DeathAdder EssentialWired
Logitech Signature M650Bluetooth Low Energy or Logi Bolt USB receiver (included, stored in the mouse)
Sources
Razer DeathAdder Essential

Manufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs

Check the exact configuration and source conditions for your use.

Body length

In Visual facts
Razer DeathAdder Essential127.3 mm
Logitech Signature M650108.2 mm
Sources
Razer DeathAdder Essential

Manufacturer specification · Mouse body length; cable excluded.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention).

Specification - Signature M650 — Logitech Support

Check the exact configuration and source conditions for your use.

Scroll controls

In Visual facts
Razer DeathAdder EssentialStandard scroll wheel; no tilt-click
Logitech Signature M650SmartWheel scrolling
Sources
Logitech Signature M650

Manufacturer specification · Original manufacturer description: SmartWheel (switches between line-by-line and fast scrolling). Shared SmartWheel availability is comparable; unlisted counterpart horizontal/thumb-wheel details remain unknown.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support

Check the exact configuration and source conditions for your use.

Maximum tracking resolution

In Visual facts
Razer DeathAdder Essential6400 DPI
Logitech Signature M6504000 DPI
Sources
Logitech Signature M650

Manufacturer specification · Adjustable in software, per Logitech.

Specification - Signature M650 — Logitech Support

Sensor settings and manufacturer tracking limits describe capabilities, not independently measured accuracy or gaming performance. Preserve each test surface and software condition.

Claimed main-switch durability

In Visual facts
Razer DeathAdder Essential10 million clicks
Logitech Signature M650Left/right: 5 million clicks; middle click: 1 million; back/forward: 500,000
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's lifecycle rating for the mechanical switches.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification

Specification - Signature M650 — Logitech Support

Check the exact configuration and source conditions for your use.

Show 2 more verified differences

Body width

In Visual facts
Razer DeathAdder Essential72.7 mm
Logitech Signature M65061 mm
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's listed width; Razer does not state the measurement basis.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech's listed width; Logitech does not state the measurement basis.

Specification - Signature M650 — Logitech Support

A size or weight trade-off; it does not establish the better product.

Dimensions

Razer DeathAdder Essential127.3 × 72.7 × 42.8 mm (length × width × height)
Logitech Signature M650108.2 × 61 × 38.8 mm (length × width × height)
Sources
Logitech Signature M650

Manufacturer specification · Standard Signature M650. Logitech lists height 108.2 mm, width 61 mm and depth 38.8 mm; as in other Logitech records in this catalogue, Logitech's height is the front-to-back length and its depth is the mouse's height. The M650 L and M650 L Left measure 118.7 × 66.2 × 42 mm.

Specification - Signature M650 — Logitech Support

A size or weight trade-off; it does not establish the better product.

Configuration & compatibility details (1)

Hand orientation

Razer DeathAdder EssentialRight-handed ergonomic shape; side buttons on the left
Logitech Signature M650Right-handed contoured shape; side buttons on the left
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's stated form factor; side-button position from the official product views. Not a grip or comfort test.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

Manufacturer specification · Logitech recommends the M650 for small-to-medium hands and sells a separate M650 L Left for left-handed users; the official views show the back and forward buttons on the left side. Not a grip or comfort test.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product page

Both sources describe right-hand controls. Their wording does not establish a different hand orientation or identical shape and comfort.

Missing or non-comparable evidence (18)

Sensor model

Razer DeathAdder EssentialNot verified
Logitech Signature M650Not verified
Sources
Razer DeathAdder Essential

The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification

Specification - Signature M650 — Logitech Support

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

Maximum report rate

Razer DeathAdder EssentialNot verified
Logitech Signature M650Not verified
Sources
Razer DeathAdder Essential

Razer does not list a polling rate for this model. · Manufacturer specification · Neither the tech specs nor the overview state a report rate.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Logitech does not list a report rate in Hz for this model. · Manufacturer specification · Logitech gives report intervals rather than rates: 7.5 ms over Logi Bolt and 7.5–11.25 ms over Bluetooth (1 ms is listed for the receiver's USB link).

Specification - Signature M650 — Logitech Support

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

Customisation software

Razer DeathAdder EssentialNot verified
Logitech Signature M650Logi Options+
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Original exact supported software description: Logi Options+ (Windows 10 or later and macOS 10.15 or later). Support separates software support(Windows10+/macOS10.15+) from deviceOS/platform support; at-release app is Options+ onWindows/macOS. Tune support is not resolved, and these source details do not establish a peer incompatibility.

Specification - Signature M650 — Logitech Support

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

Battery

Razer DeathAdder EssentialNot verified
Logitech Signature M6501 × AA (replaceable, included); up to 24 months with Logi Bolt or 20 months with Bluetooth
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Logitech's ratings; test conditions are not stated.

Specification - Signature M650 — Logitech Support

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

Listed compatibility

Razer DeathAdder EssentialNot verified
Logitech Signature M650Windows 10, Windows 11; macOS 10.10 or later; ChromeOS; Linux; Android 5.0 or later; iPadOS 13.4 or later; Works with Surface
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Logitech's OS/platform support; Bluetooth use needs macOS 10.15 or later. Logitech says it is Works With Chromebook Certified. Logitech's own sources disagree on minimum versions: the support specification and the UK page's system requirements give iPadOS 13.4 or later and Android 5.0 or later (recorded here), while the UK page's FAQ says it natively supports iPadOS (14 or later), Android (8.0 or later) and Linux.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support

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

Listed package

Razer DeathAdder EssentialNot verified
Logitech Signature M650Mouse; Logi Bolt receiver (inside the mouse); 1 AA battery (inside the mouse); user documentation
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Manufacturer box contents. Check the seller's listing.

Specification - Signature M650 — Logitech Support

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

Materials

Razer DeathAdder EssentialNot verified
Logitech Signature M650Made with recycled plastic
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Logitech's UK page data give certified post-consumer recycled (PCR) plastic of 64% for the mouse in Graphite, standard size (910-006253), excluding packaging, printed wiring assembly and receiver; the US page gives the same 64% for Graphite 910-006250. Logitech's support specification instead lists the PCR plastic as "Kingfa35%PCR Or Wistron 85%PCR". Both are reported as published; no single recycled-content percentage is recorded as the value.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product pageSpecification - Signature M650 — Logitech Support

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

Click noise

Razer DeathAdder EssentialNot verified
Logitech Signature M650Quiet clicks
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Manufacturer specification · Logitech rates the silent left/right buttons for 5 million clicks and the silent middle click for 1 million. Logitech's FAQ says its SilentTouch technology reduces more than 90% of the clicking noise compared to Logitech M185; its feature text says SilentTouch reduces 90% of click sounds. No decibel figure is published. Original manufacturer description: Silent left/right clicks and silent middle click. These own claims do not establish a measured noise advantage over another quiet-click mouse.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support

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

Minimum sensitivity

Razer DeathAdder EssentialNot verified
Logitech Signature M650400 DPI
Sources
Razer DeathAdder Essential

Razer does not list a minimum sensitivity for this model. · Manufacturer specification · Razer lists only the 6,400 DPI maximum.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech lists 400 – 4,000 DPI (software).

Specification - Signature M650 — Logitech Support

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

Published acceleration threshold

Razer DeathAdder Essential30 G
Logitech Signature M650Not verified
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's maximum acceleration rating; test surface not stated.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

No source recorded for this side.

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

Published tracking speed

Razer DeathAdder Essential220 IPS
Logitech Signature M650Not verified
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's maximum speed rating; test surface not stated.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

No source recorded for this side.

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

Limited hardware warranty

Razer DeathAdder EssentialNot verified
Logitech Signature M650Conflicting evidence
Sources
Razer DeathAdder Essential

No source recorded for this side.

Logitech Signature M650

Logitech UK lists a 2-year limited hardware warranty; Logitech US lists 1 year. Regional terms differ. · Manufacturer specification

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product page

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

Weight

Razer DeathAdder Essential96 g
Logitech Signature M650101.4 g
Sources
Razer DeathAdder Essential

Manufacturer specification · Manufacturer-listed weight; Razer does not state whether the cable is included.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech lists 101.4 g (3.58 oz) for the standard Signature M650 without stating whether the AA battery is included.

Specification - Signature M650 — Logitech Support

The manufacturer sources do not establish the same cable weighing basis. Both published masses remain visible with their conditions, but are not ranked.

2 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Razer DeathAdder Essential

What it brings

What to check

  • The specifications are modest: 6,400 DPI, 220 IPS and 30 G tracking ratings, mechanical switches rated for 10 million clicks, standard stock feet and no onboard memory.
    Manufacturer source
  • Razer lists a weight of 96 g; the mouse is wired with a right-handed form factor, and Razer publishes no polling rate or minimum DPI.
    Manufacturer source Manufacturer source

Logitech Signature M650

What it brings

  • Left, right and middle clicks are silent, and Logitech rates one AA battery for up to 24 months on Logi Bolt (20 months on Bluetooth).
    Manufacturer source
  • The receiver is included and stored in the mouse, and Logitech lists support for Windows, macOS, ChromeOS, Linux, Android and iPadOS.
    Manufacturer source Manufacturer source

What to check

  • Tracking tops out at 4,000 DPI and Logitech lists report intervals of 7.5 ms or slower over Bolt and Bluetooth; Logitech positions it for all-day comfort and productivity.
    Manufacturer source Manufacturer source
  • The standard M650 is right-handed; left-handed users need the separate M650 L Left, and Logitech does not say whether the 101.4 g weight includes the battery.
    Manufacturer source Manufacturer source
COMPARE THE DETAILS

Full specifications

How we verify
29 of 29 specifications Sources in each row
Source-backed specifications for Razer DeathAdder Essential and Logitech Signature M650
SpecificationRazer DeathAdder EssentialLogitech Signature M650
WeightDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Manufacturer-listed weight; Razer does not state whether the cable is included.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech lists 101.4 g (3.58 oz) for the standard Signature M650 without stating whether the AA battery is included.

Specification - Signature M650 — Logitech Support
96 g101.4 g
DimensionsDifferent
Sources
Logitech Signature M650

Manufacturer specification · Standard Signature M650. Logitech lists height 108.2 mm, width 61 mm and depth 38.8 mm; as in other Logitech records in this catalogue, Logitech's height is the front-to-back length and its depth is the mouse's height. The M650 L and M650 L Left measure 118.7 × 66.2 × 42 mm.

Specification - Signature M650 — Logitech Support
127.3 × 72.7 × 42.8 mm (length × width × height)108.2 × 61 × 38.8 mm (length × width × height)
Body lengthDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Mouse body length; cable excluded.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention).

Specification - Signature M650 — Logitech Support
127.3 mm108.2 mm
Body widthDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's listed width; Razer does not state the measurement basis.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech's listed width; Logitech does not state the measurement basis.

Specification - Signature M650 — Logitech Support
72.7 mm61 mm
Hand orientationDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's stated form factor; side-button position from the official product views. Not a grip or comfort test.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

Manufacturer specification · Logitech recommends the M650 for small-to-medium hands and sells a separate M650 L Left for left-handed users; the official views show the back and forward buttons on the left side. Not a grip or comfort test.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product page
Right-handed ergonomic shape; side buttons on the leftRight-handed contoured shape; side buttons on the left
Glide feetDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer does not state the material.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification

Specification - Signature M650 — Logitech Support
Standard stock feetPTFE (rated for a 100 km range)
Tracking method
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer names the sensor only as optical; no model is given. Original manufacturer description: 6,400 DPI optical sensor. This identifies optical tracking, not a named sensor model. Model-specific hardware, accuracy and performance are not inferred.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

Manufacturer specification · Logitech's sensor description; no sensor model is named. Original manufacturer description: Logitech Advanced Optical Tracking. This identifies optical tracking, not a named sensor model. Model-specific hardware, accuracy and performance are not inferred.

Specification - Signature M650 — Logitech Support
OpticalOptical
Maximum tracking resolutionDifferent
Sources
Logitech Signature M650

Manufacturer specification · Adjustable in software, per Logitech.

Specification - Signature M650 — Logitech Support
6400 DPI4000 DPI
Minimum sensitivity
Sources
Razer DeathAdder Essential

Razer does not list a minimum sensitivity for this model. · Manufacturer specification · Razer lists only the 6,400 DPI maximum.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification · Logitech lists 400 – 4,000 DPI (software).

Specification - Signature M650 — Logitech Support
Not provided400 DPI
Published tracking speed
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's maximum speed rating; test surface not stated.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

No source recorded.

220 IPSNot provided
Published acceleration threshold
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's maximum acceleration rating; test surface not stated.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

No source recorded.

30 GNot provided
Listed controls
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer lists 5 independently programmable Hyperesponse buttons.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

Manufacturer specification · Logitech lists 5 buttons (left/right click, back/forward, scroll-wheel middle click) plus a connectivity button.

Specification - Signature M650 — Logitech Support
55
Main switch technology
Sources
Logitech Signature M650

No source recorded.

Razer Mechanical SwitchesNot provided
Claimed main-switch durabilityDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Razer's lifecycle rating for the mechanical switches.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Manufacturer specification

Specification - Signature M650 — Logitech Support
10 million clicksLeft/right: 5 million clicks; middle click: 1 million; back/forward: 500,000
Scroll controlsDifferent
Sources
Logitech Signature M650

Manufacturer specification · Original manufacturer description: SmartWheel (switches between line-by-line and fast scrolling). Shared SmartWheel availability is comparable; unlisted counterpart horizontal/thumb-wheel details remain unknown.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support
Standard scroll wheel; no tilt-clickSmartWheel scrolling
ConnectionsDifferent
Sources
Razer DeathAdder Essential

Manufacturer specification · Original manufacturer description: Wired (standard cable). Wired only; Razer lists no wireless mode or battery. The connector type is not stated on these pages. Shared wired availability is comparable. Manufacturer cable and connector details retain their own scope; no unlisted connector is inferred.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential (RZ01-03850100-R3U1) — Razer US store page and tech specs
WiredBluetooth Low Energy or Logi Bolt USB receiver (included, stored in the mouse)
Cable length
Sources
Logitech Signature M650

No source recorded.

1.8 mNot provided
Battery
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Logitech's ratings; test conditions are not stated.

Specification - Signature M650 — Logitech Support
Not provided1 × AA (replaceable, included); up to 24 months with Logi Bolt or 20 months with Bluetooth
Onboard memory
Sources
Logitech Signature M650

No source recorded.

NoNot provided
Lighting
Sources
Logitech Signature M650

No source recorded.

Single-colour green lighting; no RGBNot provided
Customisation software
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Original exact supported software description: Logi Options+ (Windows 10 or later and macOS 10.15 or later). Support separates software support(Windows10+/macOS10.15+) from deviceOS/platform support; at-release app is Options+ onWindows/macOS. Tune support is not resolved, and these source details do not establish a peer incompatibility.

Specification - Signature M650 — Logitech Support
Not providedLogi Options+
Click noise
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Logitech rates the silent left/right buttons for 5 million clicks and the silent middle click for 1 million. Logitech's FAQ says its SilentTouch technology reduces more than 90% of the clicking noise compared to Logitech M185; its feature text says SilentTouch reduces 90% of click sounds. No decibel figure is published. Original manufacturer description: Silent left/right clicks and silent middle click. These own claims do not establish a measured noise advantage over another quiet-click mouse.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support
Not providedQuiet clicks
Grip surface
Sources
Razer DeathAdder Essential

No source recorded.

Not providedSoft thumb area and rubber side grips
Listed compatibility
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Logitech's OS/platform support; Bluetooth use needs macOS 10.15 or later. Logitech says it is Works With Chromebook Certified. Logitech's own sources disagree on minimum versions: the support specification and the UK page's system requirements give iPadOS 13.4 or later and Android 5.0 or later (recorded here), while the UK page's FAQ says it natively supports iPadOS (14 or later), Android (8.0 or later) and Linux.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageSpecification - Signature M650 — Logitech Support
Not providedWindows 10, Windows 11; macOS 10.10 or later; ChromeOS; Linux; Android 5.0 or later; iPadOS 13.4 or later; Works with Surface
Listed package
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Manufacturer box contents. Check the seller's listing.

Specification - Signature M650 — Logitech Support
Not providedMouse; Logi Bolt receiver (inside the mouse); 1 AA battery (inside the mouse); user documentation
Materials
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Manufacturer specification · Logitech's UK page data give certified post-consumer recycled (PCR) plastic of 64% for the mouse in Graphite, standard size (910-006253), excluding packaging, printed wiring assembly and receiver; the US page gives the same 64% for Graphite 910-006250. Logitech's support specification instead lists the PCR plastic as "Kingfa35%PCR Or Wistron 85%PCR". Both are reported as published; no single recycled-content percentage is recorded as the value.

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product pageSpecification - Signature M650 — Logitech Support
Not providedMade with recycled plastic
Show unverified (3)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.
Specifications without verified values for either product
Maximum report rate
Sources
Razer DeathAdder Essential

Razer does not list a polling rate for this model. · Manufacturer specification · Neither the tech specs nor the overview state a report rate.

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specs
Logitech Signature M650

Logitech does not list a report rate in Hz for this model. · Manufacturer specification · Logitech gives report intervals rather than rates: 7.5 ms over Logi Bolt and 7.5–11.25 ms over Bluetooth (1 ms is listed for the receiver's USB link).

Specification - Signature M650 — Logitech Support
Not providedNot provided
Sensor model
Sources
Razer DeathAdder Essential

The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification

Razer DeathAdder Essential (RZ01-03850100-R3M1) — Razer UK store page and tech specsRazer DeathAdder Essential — Razer UK product overview
Logitech Signature M650

The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification

Specification - Signature M650 — Logitech Support
Not listed by the manufacturerNot listed by the manufacturer
Limited hardware warranty
Sources
Razer DeathAdder Essential

No source recorded.

Logitech Signature M650

Logitech UK lists a 2-year limited hardware warranty; Logitech US lists 1 year. Regional terms differ. · Manufacturer specification

Logitech Signature M650 Wireless Mouse — Logitech UK product pageLogitech Signature M650 Wireless Mouse — Logitech US product page
Not providedConflicting sources
First product manufacturer sourceSecond product manufacturer source
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Logitech Signature Comfort Plus M850 L in Graphite: official product image, top view

Logitech Signature Comfort Plus M850 L

Weight
107.9 g
Controls
6 controls
Body length
121.8 mm
Prices & product profile

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.