MICE · YOUR NEXT FACE-OFF

Logitech Pebble Mouse 2 M350s vs Logitech Signature Comfort Plus M850 L

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

Compared products

YOUR FIRST CHOICE

Logitech Pebble Mouse 2 M350s

Tonal Rose · 910-007014 · UK manufacturer configuration

Full product profile Official image

Exact model & source notes

The Logitech Pebble Mouse 2 M350s is a slim, round Bluetooth mouse with Silent Touch quiet clicks, Easy-Switch for three devices, a customisable middle button and up to 24 months from one AA battery.

Specifications checked 27 Sept 2026.

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

Manufacturer specifications

WHAT DIFFERS

3Listed controls6

58.7 mmBody width74.3 mm

53 gWeight without battery82.9 g

3 of 9 verified differences, in the order listed below. Not a rating.

See the 9 verified differences

THE CONTENDER

Logitech Signature Comfort Plus M850 L

Graphite · 910-007715 · UK manufacturer configuration

Full product profile Official image

Exact model & source notes

The Signature Comfort Plus M850 L (UK part 910-007715, Graphite) is a right-handed mouse for home, office and hybrid work that Logitech describes as its first with a palm cushion. It has quiet clicks, six buttons including a DPI button, runs on one AA battery for up to 24 months, and connects over Bluetooth (Bolt receiver sold separately).

Specifications checked 26 Sept 2026.

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

Manufacturer specifications

Pebble Mouse 2 M350s UK & US retailers

UK & US price history: no verified listing yet

Signature Comfort Plus M850 L 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.

SPECIFICATIONS SIDE BY SIDE7 topics

SELECTED TOPIC

01 / 07

Connections

Check the exact configuration and source conditions for your use.

Logitech Pebble Mouse 2 M350sBluetooth Low Energy; compatible with a Logi Bolt USB receiver (not included)

Manufacturer specification · Easy-Switch pairs with up to three devices; wireless range 10 m in an office environment, per Logitech.

Source 1 Source 2 Source 3

Logitech Signature Comfort Plus M850 LBluetooth Low Energy; Logi Bolt USB receiver compatible (not included); up to 3 paired devices

Manufacturer specification · Not compatible with other Logitech receivers; not Unifying-ready.

Source 1

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 ↓

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

Connections

In Visual facts

Logitech Pebble Mouse 2 M350sBluetooth Low Energy; compatible with a Logi Bolt USB receiver (not included)

Logitech Signature Comfort Plus M850 LBluetooth Low Energy; Logi Bolt USB receiver compatible (not included); up to 3 paired devices

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Easy-Switch pairs with up to three devices; wireless range 10 m in an office environment, per Logitech.

Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Not compatible with other Logitech receivers; not Unifying-ready.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Check the exact configuration and source conditions for your use.

Listed controls

In Visual facts

Logitech Pebble Mouse 2 M350s3

Logitech Signature Comfort Plus M850 L6

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Logitech lists 3 buttons (left/right click and scroll-wheel middle click, which is customisable in Logi Options+) plus the connectivity button and an on/off switch.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Left/right click, scroll-wheel middle click, side buttons and DPI button; 4 programmable.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Physical clicks, programmable wheel actions and optional side buttons can produce different counts. Read each configuration; a larger count does not establish better control or programmability.

Hand orientation

In Visual facts

Logitech Pebble Mouse 2 M350sSlim round shape; no side buttons

Logitech Signature Comfort Plus M850 LRight

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Logitech describes a minimalist, slim and round mouse and lists only left/right click and the scroll-wheel middle click as buttons (plus the connect button); it does not state a hand orientation. Not a grip or comfort test.

Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Sculpted right-hand shape with palm cushion and rubber side grips.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Check the exact configuration and source conditions for your use.

Battery

In Visual facts

Logitech Pebble Mouse 2 M350s1 × AA (replaceable, pre-installed alkaline); up to 24 months

Logitech Signature Comfort Plus M850 L1 × AA alkaline (included, replaceable); up to 24 months over Bolt or Bluetooth

Sources

Logitech Pebble Mouse 2 M350s

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

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Actual battery life varies by usage.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Manufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.

Listed package

In Visual facts

Logitech Pebble Mouse 2 M350sPebble Mouse 2 M350s; 1 AA alkaline battery (pre-installed); user documentation; Important Info Document

Logitech Signature Comfort Plus M850 LMouse with 1 × AA battery; user documentation

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Manufacturer box contents; no receiver is included. Check the seller's listing.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · No receiver included.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Check the exact configuration and source conditions for your use.

Materials

In Visual facts

Logitech Pebble Mouse 2 M350sPCR ABS plastic; more than 50% recycled plastic in the colour range

Logitech Signature Comfort Plus M850 LMade with recycled plastic

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification

Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Logitech gives no recycled-content percentage on this page.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Check the exact configuration and source conditions for your use.

Show 3 more verified differences

Click noise

In Visual facts

Logitech Pebble Mouse 2 M350sSilent Touch: 90% less click noise

Logitech Signature Comfort Plus M850 LQuiet clicks

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Logitech's claim: click noise reduced by over 90% compared with the Logitech M185; left-click and typing dBA levels measured by an independent lab at 1 m (product-page specifications).

Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Logitech publishes no decibel or percentage figure. Original manufacturer description: Quiet clicks (Logitech: less noisy operation). These own claims do not establish a measured noise advantage over another quiet-click mouse.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Check the exact configuration and source conditions for your use.

Body width

Logitech Pebble Mouse 2 M350s58.7 mm

Logitech Signature Comfort Plus M850 L74.3 mm

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Overall width, not grip width.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Weight without battery

Logitech Pebble Mouse 2 M350s53 g

Logitech Signature Comfort Plus M850 L82.9 g

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Without receiver and without battery, per Logitech.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

Manufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.

Configuration & compatibility details (1)

Listed compatibility

Logitech Pebble Mouse 2 M350sBluetooth: Windows 10, 11 or later; macOS 11 or later; iPadOS 14 or later; Android 9.0 or later; ChromeOS; Linux; Works With Chromebook

Logitech Signature Comfort Plus M850 LBluetooth Low Energy required: Windows 10, 11 or later, macOS 12 or later, Linux, ChromeOS, iPadOS 15 or later, Android 12 or later

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Logitech's Bluetooth requirements.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Device basic functions are supported without software on systems other than Windows and macOS (Linux, ChromeOS, iPadOS and Android).

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

These descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.

Missing or non-comparable evidence (16)

Scroll controls

Logitech Pebble Mouse 2 M350sNot verified

Logitech Signature Comfort Plus M850 LSmartWheel scrolling

Sources

Logitech Pebble Mouse 2 M350s

No source recorded for this side.

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Original manufacturer description: SmartWheel; virtual horizontal scroll; no thumb wheel. Shared SmartWheel availability is comparable; unlisted counterpart horizontal/thumb-wheel details remain unknown.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Sensor model

Logitech Pebble Mouse 2 M350sNot verified

Logitech Signature Comfort Plus M850 LPluto ONE (Logitech Advanced Optical tracking)

Sources

Logitech Pebble Mouse 2 M350s

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

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Maximum report rate (Bluetooth)

Logitech Pebble Mouse 2 M350s133 Hz

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · Logitech gives the Bluetooth report rate as 88–133 Hz (7.5–11.25 ms).

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Logitech does not list a report rate for this model. · Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Report rate with optional Logi Bolt receiver

Logitech Pebble Mouse 2 M350s125 Hz

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · 125 Hz (8 ms) in Bolt mode; the Logi Bolt receiver is not included.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

No source recorded for this side.

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

Customisation software

Logitech Pebble Mouse 2 M350sLogi Options+ (Windows and macOS)

Logitech Signature Comfort Plus M850 LLogi Options+

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · The middle button can be customised in Logi Options+.

Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Original exact supported software description: Logi Options+; Logi Tune. The exact source additionally names Logi Tune; that positive is retained here. The predecessor source does not resolve Tune support, so omission cannot establish a missing app or capability.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

One source states less detail or a rounded figure. This is not a verified difference; check the exact configuration.

Certifications

Logitech Pebble Mouse 2 M350sNot verified

Logitech Signature Comfort Plus M850 LCertified for WWCB; Engineered for Intel Evo laptops

Sources

Logitech Pebble Mouse 2 M350s

No source recorded for this side.

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Multi-device pairing

Logitech Pebble Mouse 2 M350sUp to 3 devices with Easy-Switch

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification

Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

No source recorded for this side.

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

Claimed button durability

Logitech Pebble Mouse 2 M350sLeft/right: 3 million cycles; middle wheel button: 1 million cycles

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

No source recorded for this side.

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

Published acceleration threshold

Logitech Pebble Mouse 2 M350sGreater than 10 G

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

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

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

No source recorded for this side.

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

Tracking method

Logitech Pebble Mouse 2 M350sOptical

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

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

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

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

Logitech Pebble Mouse 2 M350sGreater than 20 IPS

Logitech Signature Comfort Plus M850 LNot verified

Sources

Logitech Pebble Mouse 2 M350s

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

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

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

Logitech Pebble Mouse 2 M350sNot verified

Logitech Signature Comfort Plus M850 LConflicting evidence

Sources

Logitech Pebble Mouse 2 M350s

No source recorded for this side.

Logitech Signature Comfort Plus M850 L

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

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications Logitech US — Signature Comfort Plus M850 L product page and technical specifications

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

Wireless range

Logitech Pebble Mouse 2 M350sNot verified

Logitech Signature Comfort Plus M850 L10 m

Sources

Logitech Pebble Mouse 2 M350s

No source recorded for this side.

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Body length

Logitech Pebble Mouse 2 M350sConflicting evidence

Logitech Signature Comfort Plus M850 L121.8 mm

Sources

Logitech Pebble Mouse 2 M350s

Logitech's support specification lists the height (front-to-back length) as 4.20 in (106.7 mm), while the UK product page lists 106 mm and the US product page 4.17 in (106 mm). The official figures disagree, so no single length is recorded. · Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention).

Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Dimensions

Logitech Pebble Mouse 2 M350sConflicting evidence

Logitech Signature Comfort Plus M850 L121.8 × 74.3 × 44.2 mm (length × width × height)

Sources

Logitech Pebble Mouse 2 M350s

Logitech's support specification lists 106.7 × 58.7 × 26.62 mm (length × width × height), while its UK and US product pages list 106 × 58.7 × 26.62 mm. The length remains unresolved; width 58.7 mm and height 26.62 mm agree. · Manufacturer specification · Logitech's support specification lists 106.7 × 58.7 × 26.62 mm (length × width × height), while its UK and US product pages list 106 × 58.7 × 26.62 mm. The length remains unresolved; width 58.7 mm and height 26.62 mm agree.

Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · Logitech labels these Height 121.8 mm, Width 74.3 mm, Depth 44.2 mm; the first is the front-to-back length in its top-view convention.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Weight

Logitech Pebble Mouse 2 M350s76 g

Logitech Signature Comfort Plus M850 L107.9 g

Sources

Logitech Pebble Mouse 2 M350s

Manufacturer specification · As Logitech states it: with a receiver and one alkaline AA battery (2.68 oz). The Logi Bolt receiver is not included in the box; Logitech lists 53 g without receiver and battery.

Specification - Pebble Mouse 2 M350s — Logitech Support

Logitech Signature Comfort Plus M850 L

Manufacturer specification · With the AA battery; receiver not included. 82.9 g without battery.

Logitech UK — Signature Comfort Plus M850 L product page and technical specifications

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

Logitech Pebble Mouse 2 M350s

What it brings

At 26.62 mm high and 53 g without battery it is very slim and light, and Logitech says Silent Touch removes 90% of click noise.
Manufacturer source Manufacturer source
Easy-Switch moves between three devices, and Logitech lists Windows, macOS, iPadOS, Android, ChromeOS and Linux over Bluetooth.
Manufacturer source Manufacturer source

What to check

It has only three buttons and no side buttons, and the Logi Bolt receiver needed for Bolt mode is not included.
Manufacturer source
Bluetooth reporting is limited to 88–133 Hz; 125 Hz Bolt mode needs a separately purchased receiver. Logitech rates tracking at 400–4000 DPI, over 20 IPS and over 10 G.
Manufacturer source Manufacturer source

Logitech Signature Comfort Plus M850 L

What it brings

Right-hand sculpted shape with a palm cushion, thumb rest and rubber side grips, measuring 121.8 × 74.3 mm.
Manufacturer source
Six buttons, including side buttons and a DPI button; four are programmable in Logi Options+ or Logi Tune.
Manufacturer source
One included AA battery rated for up to 24 months, and Easy-Switch pairing with up to three devices.
Manufacturer source
Quiet clicks for less noisy operation, which Logitech positions for shared or flexible workspaces.
Manufacturer source

What to check

No receiver in the box: without Bluetooth you need a separately bought Logi Bolt receiver, and other Logitech USB receivers are not supported.
Manufacturer source
No thumb wheel (horizontal scrolling is virtual), and sensitivity tops out at 4,000 DPI.
Manufacturer source
Right-handed only; Logitech does not publish a report rate.
Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

28 of 28 specifications Sources in each row

Source-backed specifications for Logitech Pebble Mouse 2 M350s and Logitech Signature Comfort Plus M850 L
Specification	Logitech Pebble Mouse 2 M350s	Logitech Signature Comfort Plus M850 L

WeightDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · As Logitech states it: with a receiver and one alkaline AA battery (2.68 oz). The Logi Bolt receiver is not included in the box; Logitech lists 53 g without receiver and battery. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · With the AA battery; receiver not included. 82.9 g without battery. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	76 g	107.9 g
Weight without batteryDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Without receiver and without battery, per Logitech. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	53 g	82.9 g
Dimensions Sources Logitech Pebble Mouse 2 M350s Logitech's support specification lists 106.7 × 58.7 × 26.62 mm (length × width × height), while its UK and US product pages list 106 × 58.7 × 26.62 mm. The length remains unresolved; width 58.7 mm and height 26.62 mm agree. · Manufacturer specification · Logitech's support specification lists 106.7 × 58.7 × 26.62 mm (length × width × height), while its UK and US product pages list 106 × 58.7 × 26.62 mm. The length remains unresolved; width 58.7 mm and height 26.62 mm agree. Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Logitech labels these Height 121.8 mm, Width 74.3 mm, Depth 44.2 mm; the first is the front-to-back length in its top-view convention. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Conflicting sources	121.8 × 74.3 × 44.2 mm (length × width × height)
Body length Sources Logitech Pebble Mouse 2 M350s Logitech's support specification lists the height (front-to-back length) as 4.20 in (106.7 mm), while the UK product page lists 106 mm and the US product page 4.17 in (106 mm). The official figures disagree, so no single length is recorded. · Manufacturer specification · Logitech's listed height (front-to-back in its top-view convention). Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Conflicting sources	121.8 mm
Body widthDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Overall width, not grip width. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	58.7 mm	74.3 mm
Hand orientationDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech describes a minimalist, slim and round mouse and lists only left/right click and the scroll-wheel middle click as buttons (plus the connect button); it does not state a hand orientation. Not a grip or comfort test. Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Sculpted right-hand shape with palm cushion and rubber side grips. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Slim round shape; no side buttons	Right

Tracking method Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's sensor description; no sensor model is named. Original manufacturer description: High-precision optical tracking. This identifies optical tracking, not a named sensor model. Model-specific hardware, accuracy and performance are not inferred. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	Optical	Not provided
Maximum tracking resolution Sources Logitech Pebble Mouse 2 M350s Manufacturer specification Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	4000 DPI	4000 DPI
Minimum sensitivity Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech lists 400-4000 DPI. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Adjustable in 100 DPI increments; nominal 1,000 DPI. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	400 DPI	400 DPI
Maximum report rate (Bluetooth) Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech gives the Bluetooth report rate as 88–133 Hz (7.5–11.25 ms). Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Logitech does not list a report rate for this model. · Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	133 Hz	Not listed by the manufacturer
Report rate with optional Logi Bolt receiver Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · 125 Hz (8 ms) in Bolt mode; the Logi Bolt receiver is not included. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	125 Hz	Not provided
Published tracking speed Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's maximum speed rating; test surface not stated. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	Greater than 20 IPS	Not provided
Published acceleration threshold Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's maximum acceleration rating; test surface not stated. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	Greater than 10 G	Not provided
Sensor model Sources Logitech Pebble Mouse 2 M350s The individually reviewed exact source inventory does not identify a sensor model. The published method or description is retained separately. · Manufacturer specification Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Not listed by the manufacturer	Pluto ONE (Logitech Advanced Optical tracking)

Listed controlsDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech lists 3 buttons (left/right click and scroll-wheel middle click, which is customisable in Logi Options+) plus the connectivity button and an on/off switch. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Left/right click, scroll-wheel middle click, side buttons and DPI button; 4 programmable. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	3	6
Claimed button durability Sources Logitech Pebble Mouse 2 M350s Manufacturer specification Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	Left/right: 3 million cycles; middle wheel button: 1 million cycles	Not provided
Scroll controls Sources Logitech Pebble Mouse 2 M350s No source recorded. Logitech Signature Comfort Plus M850 L Manufacturer specification · Original manufacturer description: SmartWheel; virtual horizontal scroll; no thumb wheel. Shared SmartWheel availability is comparable; unlisted counterpart horizontal/thumb-wheel details remain unknown. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Not provided	SmartWheel scrolling

ConnectionsDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Easy-Switch pairs with up to three devices; wireless range 10 m in an office environment, per Logitech. Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Not compatible with other Logitech receivers; not Unifying-ready. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Bluetooth Low Energy; compatible with a Logi Bolt USB receiver (not included)	Bluetooth Low Energy; Logi Bolt USB receiver compatible (not included); up to 3 paired devices
BatteryDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's rating; test conditions are not stated. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Actual battery life varies by usage. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	1 × AA (replaceable, pre-installed alkaline); up to 24 months	1 × AA alkaline (included, replaceable); up to 24 months over Bolt or Bluetooth
Wireless range Sources Logitech Pebble Mouse 2 M350s No source recorded. Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Not provided	10 m

Customisation software Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · The middle button can be customised in Logi Options+. Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Original exact supported software description: Logi Options+; Logi Tune. The exact source additionally names Logi Tune; that positive is retained here. The predecessor source does not resolve Tune support, so omission cannot establish a missing app or capability. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Logi Options+ (Windows and macOS)	Logi Options+

Click noiseDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's claim: click noise reduced by over 90% compared with the Logitech M185; left-click and typing dBA levels measured by an independent lab at 1 m (product-page specifications). Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Logitech Signature Comfort Plus M850 L Manufacturer specification · Logitech publishes no decibel or percentage figure. Original manufacturer description: Quiet clicks (Logitech: less noisy operation). These own claims do not establish a measured noise advantage over another quiet-click mouse. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Silent Touch: 90% less click noise	Quiet clicks
Multi-device pairing Sources Logitech Pebble Mouse 2 M350s Manufacturer specification Logitech Pebble Mouse 2 M350s — Logitech UK product page Logitech Pebble Mouse 2 M350s — Logitech US product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L No source recorded.	Up to 3 devices with Easy-Switch	Not provided
MaterialsDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification Logitech Pebble Mouse 2 M350s — Logitech UK product page Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Logitech gives no recycled-content percentage on this page. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	PCR ABS plastic; more than 50% recycled plastic in the colour range	Made with recycled plastic
Listed compatibilityDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Logitech's Bluetooth requirements. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · Device basic functions are supported without software on systems other than Windows and macOS (Linux, ChromeOS, iPadOS and Android). Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Bluetooth: Windows 10, 11 or later; macOS 11 or later; iPadOS 14 or later; Android 9.0 or later; ChromeOS; Linux; Works With Chromebook	Bluetooth Low Energy required: Windows 10, 11 or later, macOS 12 or later, Linux, ChromeOS, iPadOS 15 or later, Android 12 or later
Listed packageDifferent Sources Logitech Pebble Mouse 2 M350s Manufacturer specification · Manufacturer box contents; no receiver is included. Check the seller's listing. Specification - Pebble Mouse 2 M350s — Logitech Support Logitech Signature Comfort Plus M850 L Manufacturer specification · No receiver included. Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Pebble Mouse 2 M350s; 1 AA alkaline battery (pre-installed); user documentation; Important Info Document	Mouse with 1 × AA battery; user documentation
Certifications Sources Logitech Pebble Mouse 2 M350s No source recorded. Logitech Signature Comfort Plus M850 L Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications	Not provided	Certified for WWCB; Engineered for Intel Evo laptops

Show unverified (1)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
Limited hardware warranty Sources Logitech Pebble Mouse 2 M350s No source recorded. Logitech Signature Comfort Plus M850 L Logitech UK lists a 2-year limited hardware warranty; Logitech US lists 1 year. Regional terms differ. · Manufacturer specification Logitech UK — Signature Comfort Plus M850 L product page and technical specifications Logitech US — Signature Comfort Plus M850 L product page and technical specifications	Not provided	Conflicting sources

First product manufacturer source Second product manufacturer source

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