Logitech Signature Comfort Plus Wireless Mouse

The Logitech Signature Comfort Plus tracks smoothly and fits comfortably in hand with 4000 DPI precision, no cables attached.

Wireless Bluetooth mouse featuring palm cushion, cozy side grips, quiet clicks, SmartWheel scrolling, and Easy-Switch between up to 3 devices

All day comfort
Take comfort into your own hands with Signature Comfort Plus M850 L, a wireless mouse that blends comfort and productivity. Feel the sculpted design and soft palm cushion. Work effortlessly with SmartWheel scrolling and customizable buttons.

Logitech’s first mouse with palm cushion
The palm cushion on the mouse gives you a comfy spot for your hand, making long hours of work feel a little more comfortable. 93% of surveyed users felt comfortable using the mouse, even after a full workday*.

Gentle hold, comfy control
The sculpted shape fits naturally in your hand. The thumb rest and extended rubber side grip give you confidence and control. It’s the perfect fit.

Effortless scrolling, quiet clicks
Scroll line by line or fly through pages with SmartWheel—all with quiet clicks for a calm, focused workflow.

Make it yours—customize your buttons
Do more than you ever dreamed with the Logi Options+ App. Personalize your experience to make it work for you.

Easy-Switch and Bluetooth for simple connections
Connect with Bluetooth, then swap between up to 3 devices instantly with Easy-Switch—just a tap, no dongle needed, perfect for multitasking.

Power that keeps going
Signature Comfort M850 L stays powered up for up to 24 months—no constant battery changes.

Works on nearly any platform
Don’t worry about your device’s operating system—connect wirelessly to Windows, macOS, ChromeOS, Linux, iPadOS and Android.

Specifications

Mouse
Number of movement resolution modes	37
Customizable movement resolution	Yes
Number of programmable buttons	4
Buttons type	Pressed buttons
Purpose	Universal
Button functions	Clickable scrolling, DPI switch
Movement resolution	4000 DPI
Scrolling directions	Vertical/Horizontal
Scroll type	Wheel
Programmable mouse buttons	Yes
Number of scroll wheels	1
Connectivity technology	Wireless
Movement detection technology	Optical
Buttons quantity	6
Device interface	RF Wireless + Bluetooth
Bluetooth Low Energy (BLE)	Yes
Sensor type	Pluto ONE
Multi-device support	Yes
Silent click	Yes
Design
Product colour	Graphite
Form factor	Right-hand
Surface coloration	Monochromatic
Ergonomic design	Yes
Technical details
Service life of battery	24 month(s)
Weight	107.9 g
Ergonomics
Number of devices supported	3
Power
Power source	Batteries
Battery type	AA
USB Type-C charging port	No
Software
Windows operating systems supported	Yes
Mac operating systems supported	Yes
Linux operating systems supported	Yes
System requirements
Mobile operating systems supported	iPadOS, Android
Other operating systems supported	ChromeOS
Weight & dimensions
Width	74.3 mm
Depth	121.8 mm
Height	44.2 mm
Packaging data
AC adapter included	No
Quantity per pack	1 pc(s)
Receiver included	No
Batteries included	Yes
User guide	Yes