





PRODUCT HIGHLIGHTS
- Product ConditionNew and Factory Fresh
- Limited Warranty1 Year
- Shipping Weight1 lbs.
- PC, Mac
- Optical
- Wireless
- Bluetooth/Radio Frequency
- 2.40 GHz
- Off White
- USB
- 4000 dpi
- Scroll Wheel
- 6 Button(s)
- Right-handed
- 1 x AA Battery Supported
Logitech Signature Comfort M840 L Wireless Mouse, Bluetooth Mouse with Silent Clicks, SmartWheel, Customizable Buttons, Off-white
PRODUCT HIGHLIGHTS
- Product ConditionNew and Factory Fresh
- Limited Warranty1 Year
- Shipping Weight1 lbs.
- PC, Mac
- Optical
- Wireless
- Bluetooth/Radio Frequency
- 2.40 GHz
- Off White
- USB
- 4000 dpi
- Scroll Wheel
- 6 Button(s)
- Right-handed
- 1 x AA Battery Supported
Logitech Signature Comfort M840 L Wireless Mouse, Bluetooth Mouse with Silent Clicks, SmartWheel, Customizable Buttons, Off-white
Overview
Discover Signature Comfort M840 L, created for all-day comfort with a natural shape for right hands and cozy side grips. Enjoy smooth SmartWheel scrolling and quiet clicks-making every navigation peaceful and precise. Effortlessly switch between up to three devices with Bluetooth and Easy-Switch, with no dongle required. Connect wirelessly across Windows, macOS, Chrome OS, Linux, iPadOS, and Android for a seamless working experience. With up to 24 months of battery life, you can work, create, and stay connected with fewer interruptions and more focus.
OVERVIEW
Logitech Signature Comfort M840 L Wireless Mouse, Bluetooth Mouse with Silent Clicks, SmartWheel, Customizable Buttons, Off-white

Discover Signature Comfort M840 L, created for all-day comfort with a natural shape for right hands and cozy side grips. Enjoy smooth SmartWheel scrolling and quiet clicks-making every navigation peaceful and precise. Effortlessly switch between up to three devices with Bluetooth and Easy-Switch, with no dongle required. Connect wirelessly across Windows, macOS, Chrome OS, Linux, iPadOS, and Android for a seamless working experience. With up to 24 months of battery life, you can work, create, and stay connected with fewer interruptions and more focus.
PACKAGE CONTENTS
Key Features
- Comfy Grip, Every Click: Contoured Mouse Shaped For Right-handed Use And Adapted For Most Hand Sizes, This Comfortable Mouse With Cozy Side Grips Make Your Workday More Comfortable
- Scroll Faster, Stay Focused: Scroll Line By Line Or Fly Through Pages With SmartWheel; Quiet Clicks Reduce Noise In Shared Or Home Offices
- Make It Yours: Customizable Buttons Via Logi Options+ Adapt To Your Tasks And Help You Do More; In The App You Can Boost Productivity Across Apps, Adjust DPI Levels And Personalize Your Workflow.
- Simple Connections: Connect This Multi-device Mouse With Bluetooth Pairing, Then Swap Up To 3 Devices Instantly With Easy-Switch-just A Tap, No Dongle Needed; Perfect For Multitasking
FEATURES & DESIGN
Key Specifications
| Pointing Device Connectivity Technology | Wireless |
|---|---|
| Pointing Device Wireless Technology | Bluetooth/Radio Frequency |
| Wireless Operating Frequency | 2.40 GHz |
| Movement Detection | Optical |
| Movement Resolution (dpi) | 4000 |
| Total Number of Buttons | 6 |