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Logitech Signature Comfort M840 L Wireless Mouse (Off-White)

BH #LOSCM840LOW • MFR #910-007713
22 reviews
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Logitech Signature Comfort M840 L Wireless Mouse (Off-White)
Key Features
  • Bluetooth 5.2 LE Connection
  • 4000 dpi Optical Sensor
  • 6 x Customizable Buttons
  • Side Grips
Stay productive throughout the day with the Logitech Signature Comfort M840 L Wireless Mouse at your side. With contoured side grips, this wireless Bluetooth LE mouse is designed to fit naturally into the hand, allowing right-handed users to work comfortably throughout the day.
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Expected availability: 7-14 Business Days
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Logitech 910-007713 Overview

Stay productive throughout the day with the Logitech Signature Comfort M840 L Wireless Mouse at your side. With contoured side grips, this wireless Bluetooth LE mouse is designed to fit naturally into the hand, allowing right-handed users to work comfortably throughout the day.

The 4000 dpi optical sensor delivers high precision and may be adjusted to fit your needs. Quiet click buttons allow you to work without distraction. Switch between three paired devices, including laptops and tablets, for enhanced multitasking. Additionally, the Signature Comfort M840 L can operate for up to two years with the included AA battery.

Comfy Control
The sculpted shape is designed to fit naturally in your hand. The thumb rest and extended rubber side grip give you enhanced control.
Effortless Scrolling and Quiet Clicks
Scroll line by line or fly through pages with the SmartWheel scroll wheel. Quiet clicks help to provide a calm, focused workflow.
Make It Yours
Use the free-to-download Logi Options+ app to streamline your workflow by customizing the six buttons and dpi sensitivity.
Easy Switching and Bluetooth Pairing
Connect with Bluetooth, then swap between up to three devices with the Easy-Switch.
Extensive Compatibility
Bluetooth connectivity allows you to use the mouse with almost any Windows, macOS, ChromeOS, Linux, iPadOS, or Android device.
Long Range
A 33' range allows you to use the mouse for presentations.
Sustainable Design
The plastic parts of Signature Comfort M840 L are made with a minimum of 50% post-consumer recycled plastic.
UPC: 097855209931

Logitech 910-007713 Specs

Key Specs
Sensor Type
Optical
Number of Buttons
4
Mouse Hand Orientation
Right
Battery
1x AA
Mouse
Sensor Type
Optical
dpi
400 to 4000
Scroll Type
Scroll Wheel
Number of Buttons
4
Mouse Hand Orientation
Right
LED Indicator
Yes: Battery Level
Keyboard
Response Time
7.5 ms
LED Illumination
No
Connectivity
Connection
Wireless: Bluetooth 5.2 Built-In (Supporting up to 3 Devices)
Full-Functionality OS Support
Android, Chrome OS, Linux, Mac, Windows, iOS, iPadOS
Battery
Battery
1x AA
Maximum Battery Life
2 Years
General
Material of Construction
Plastic
Color
Off White
Dimensions
4.8 x 2.9 x 1.7" / 121.8 x 74.3 x 43.2 mm
Weight
3.7 oz / 104.6 g
Packaging Info
Package Weight
0.335 lb
Box Dimensions (LxWxH)
5.85 x 3.55 x 2.05"

Logitech 910-007713 Reviews

Amazing🫶🏻

By TeonaE
Rated 5 out of 5
Date: 2026-05-05

[This review was collected as part of a promotion.] The Logitech Signature Comfort M840L feels surprisingly premium for a productivity-focused mouse. The build quality is solid with a well-balanced weight and a contoured shape that fits comfortably in larger hands, making long work sessions effortless. The plastic doesn’t feel cheap, and overall durability is exactly what you’d expect from Logitech’s Signature line. Noise is one of its strongest points. Thanks to SilentTouch-style switches, clicks are very quiet—almost muted—so it’s perfect for shared spaces, late-night work, or calls. You still get tactile feedback, just without the annoying sharp click sound. Performance is smooth and reliable. The optical sensor tracks accurately across most surfaces, and the SmartWheel scrolling is a highlight—it switches between precise and fast scrolling seamlessly, which is great for both detailed work and long documents. It’s not a gaming mouse, but for everyday productivity, it performs consistently well. The learning curve is minimal. It’s basically plug-and-play, and even if you use Logitech’s software for customization, everything is intuitive. You can start using it comfortably within minutes, even if you’re not tech-savvy. Assembly is nonexistent—just connect it (wired or wireless depending on version) and it works immediately. No complicated setup, no frustration. Overall, it’s a very well-rounded mouse that prioritizes comfort, quiet operation, and reliability over flashy features—and it absolutely delivers on that.

Works great on phone and computer

By PatriciaM
Rated 5 out of 5
Date: 2026-04-28

[This review was collected as part of a promotion.] This mouse glides like butter and is so quiet. The side have a soft rubber on them and is contoured nice that my hands dont cramp while using it. I have smaller hands and it fits nicely. Its super easy to connect. It worked with my android phone and my pc. Your computer needs to have Bluetooth as this doesnt have a dongle. I have had no issues switching between devices, you can have up to three connected and the button to switch is on the bottom. I havent noticed any lag either. Overall this is a really comfortable mouse that's easy to connect and isn't too big.

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