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Logitech Signature Comfort Plus M850 L

Graphite · UK configuration · Logitech part 910-007715

Weight
107.9 g
Connections
Bluetooth Low Energy; Logi Bolt USB receiver compatible (not included); up to 3 paired devices
Sensor model / type
Pluto ONE (Logitech Advanced Optical tracking)

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).

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THE ACTUAL PRODUCT
Logitech Signature Comfort Plus M850 L in Graphite: official product image, top view
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with Logitech Signature M650
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Specifications checked 26 Sept 2026Manufacturer specifications, not a hands-on test.

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The nearest checked mice by key specifications, with what differs from the Logitech Signature Comfort Plus M850 L. The first matches the Compare button above.

The useful part.

Key strengths

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
The checks that matter.

Before you buy

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
Every specification. With its source.

Full specifications

Suggest a correctionOur publishing standard

Exact configuration: Graphite · 910-007715 · UK manufacturer configuration

22 specifications in 6 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.

Sensor & tracking

4 items
Sensor model / type
Pluto ONE (Logitech Advanced Optical tracking)Source
Maximum sensitivity
4000 DPISource
Maximum report rate
Not listed by the manufacturer

Logitech does not list a report rate for this model.

Source
Minimum sensitivity
400 DPI

Adjustable in 100 DPI increments; nominal 1,000 DPI.

Source

Shape, weight & build

7 items
Weight
107.9 g

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

Source
Body length
121.8 mmSource
Weight without battery
82.9 gSource
Dimensions
121.8 × 74.3 × 44.2 mm (length × width × height)

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.

Source
Body width
74.3 mmSource
Hand orientation
Right

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

Source
Materials
Made with recycled plastic

Logitech gives no recycled-content percentage on this page.

Source

Buttons & switches

3 items
Listed controls
6

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

Source
Click noise
Quiet clicks

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.

Source
Scroll controls
SmartWheel scrolling

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

Source

Connection & battery

3 items
Connections
Bluetooth Low Energy; Logi Bolt USB receiver compatible (not included); up to 3 paired devices

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

Source
Battery
1 × AA alkaline (included, replaceable); up to 24 months over Bolt or Bluetooth

Actual battery life varies by usage.

Source
Wireless range
10 mSource

Software & onboard memory

1 item
Customisation software
Logi Options+

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.

Source

Box, compatibility & warranty

4 items
Supported operating systems
Bluetooth Low Energy required: Windows 10, 11 or later, macOS 12 or later, Linux, ChromeOS, iPadOS 15 or later, Android 12 or later

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

Source
Certifications
Certified for WWCB; Engineered for Intel Evo laptopsSource
Listed package
Mouse with 1 × AA battery; user documentation

No receiver included.

Source
Limited hardware warranty
Conflicting sources

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

2 sources
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