Do you have to turn it off when finished? If so, how?

You don't have to turn it off but you can to save battery life. To turn it off turn it over, there is an on/off switch on the bottom of the mouse,

How long is the mouse? Would like to use it for a laptop an don't want a full-sized mouse. I have another one that's only 4" from front to back.

It's approx. 3 7/8" long by 2 1/4" (approximate because it is an irregular shape, and should be no more than a 1/16" off) Should do the trick for you. I use it for my laptop and love it! I hope this helps :)

when the battery goes where can you get replacement or do you have to buy anew logiteh wirelss mouse m185

There is a slide-off panel on the bottom of the mouse. Remove it and replace the AA battery inside.

Does the unifying receiver store inside the battery cover like most Logitech mouses, or do you have to carry it around separately from the mouse?

The unifying receiver stores inside the battery cover like most Logitech mouses.

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M240 Silent Bluetooth Mouse, Wireless, Compact, Portable, Smooth Tracking, 18-Month Battery, for Windows, macOS, ChromeOS, Compatible with PC, Mac, Laptop, Tablets - Off White

Product ID: 634357265

Details

Brand
Logitech
Colour
Off White
Connectivity technology
Bluetooth
Movement detection technology
Optical
Special features
Lightweight

📶10m Bluetooth range

🔇90% quieter clicks

🔋18-month battery life

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₩62904

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖱️ Silent power, endless productivity—your desk’s new best friend.

WHISPER QUIET CLICKS - Reduce distractions with 90% less noise while keeping that satisfying click feel.
MARATHON BATTERY LIFE - Work uninterrupted for up to 18 months on a single AAA battery with smart auto-sleep.
UNIVERSAL COMPATIBILITY - Seamlessly works across Windows, macOS, ChromeOS, iPadOS, and Android devices.
SLEEK AMBIDEXTROUS DESIGN - Compact, lightweight, and travel-ready to fit naturally in either hand.
EFFORTLESS BLUETOOTH PAIRING - Connect instantly—no dongle, no hassle, just pure productivity.

The Logitech M240 Silent Bluetooth Mouse offers a sleek, portable design with whisper-quiet clicks that reduce noise by 90%. Featuring an 18-month battery life and reliable 10-meter Bluetooth connectivity, it supports multiple platforms including Windows, macOS, and ChromeOS. Certified carbon neutral and made with recycled plastics, it’s an eco-conscious choice for professionals seeking distraction-free, long-lasting performance.

Specifications

ASIN	B0BXNQK9CM
Additional Features	Lightweight, Portable, Soundless, Wireless
Antenna Location	Gaming, Office
Are Batteries Included	Yes
Are Batteries Required	Yes
Battery Average Life	18 months
Best Sellers Rank	#1,238 in Computers ( See Top 100 in Computers ) #67 in Computer Mice
Brand	Logitech
Built-In Media	1 AAA Battery, M240 Silent Mouse, User Documentation
Button Quantity	3
Color	Off White
Compatible Devices	Laptop, Personal Computer, Tablet
Connectivity Technology	Bluetooth
Customer Reviews	4.6 4.6 out of 5 stars (15,463)
Embellishment Feature	Logo
Enclosure Material	Graphite,Plastic
Finish	Matte
Global Trade Identification Number	00097855187680
Hand Orientation	Ambidextrous
Hardware Platform	Mac, PC
Item Dimensions L x W	39L x 60W millimeters
Item Type Name	Computer Mouse
Item Weight	73.8 Grams
Manufacturer	Logitech
Mfr Part Number	910-007116
Minimum Required Operating System Version	ChromeOS 137
Model Name	M240 Silent
Model Number	910-007116
Mouse Maximum Sensitivity	1000 Dots per Inch
Movement Detection	Optical
Number of Batteries	1 AAA batteries required. (included)
Operating System	Windows, macOS, ChromeOS
Power Source	Battery Powered
Range	10
Style Name	Bluetooth
Theme	No information
UPC	097855187680

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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