Logitech Signature M840L Ergonomic Optical Mouse with Upto 4000 DPI (400-4000 DPI), SmartWheel Scrolling, SilentTouch Quiet Clicks, 3-Device Easy-Switch, Up to 24 Months Battery Life (2.4GHz Wireless, Bluetooth, Graphite)

Color Graphite

Specs and Compatibility

Dimensions

• Signature Comfort M840 L (with battery) - receiver not included

  • Height: 121.8 mm

  • Width: 74.3 mm

  • Depth: 43.2 mm

  • Weight: 104.6 g

• Signature Comfort M840 L (without battery) - receiver not included

  • Height: 121.8 mm

  • Width: 74.3 mm

  • Depth: 43.2 mm

  • Weight: 79.6 g

Technical Specifications

Sensor & Tracking

• Sensor Technology: Pluto ONE

• Nominal value: 1000 DPI

• DPI (Minimal and maximal value): 400-4000 DPI (can be set in increments of 100 DPI)

• Tracking technology: Logitech Advanced Optical

Buttons

• Number of Buttons: 6 (Left/Right-click, Scroll-wheel middle click, side buttons, DPI button)

• Gesture button: No

• Number of programmable buttons: 4 (Scroll-wheel middle click, side buttons, DPI button)

Scroll Types

• Scroll Wheel: SmartWheel

• Horizontal scroll: Virtual

• Thumb wheel: No

Features

• Customization app: Logi Options+, Logi Tune

Battery

• Battery type: 1 AA battery (Alkaline Battery)

• Battery life: 24 months

• Battery life with Logi Bolt USB Receiver: up to 24-months

• Battery life with Bluetooth®: up to 24-months

Connectivity

• Connection Type: Bluetooth Low Energy Technology

• Wireless range: 10 m

• Unifying-ready mouse: No

• Unifying-ready receiver: No

• Multi-device pairing: Up to 5 devices

System Requirements

• Bluetooth: Required: Bluetooth Low Energy, Windows 10, 11 or later, macOS 12 or later, Linux*, ChromeOS*, iPadOS* 15 or later, Android™ OS* 12 or later. (*Device basic functions will be supported without software for systems other than Windows and macOS)

• Logi Bolt USB receiver: Compatible with Logi Bolt USB Receiver (not included), Not compatible with other Logitech USB receivers.

• Customization app: Logi Options+, Logi Tune

• Certified for: WWCB, Engineered for Intel Evo laptops

Warranty Information

1-Year Limited Hardware Warranty