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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Logitech M240 Compact Silent Bluetooth Wireless Mouse - Graphite | Bluetooth connectivity, no USB receiver, quiet clicks, 3 non-customizable buttons, 18-month battery life, PC Mac compatible

Product ID: 536258317

Details

Brand
Logitech
Color
Graphite
Connectivity Technology
Bluetooth
Movement Detection Technology
Optical
Special Feature
Lightweight

📶10m Bluetooth range

🔇90% quieter clicks

🔋18-month battery life

HK$273

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Description

🔇 Silence your clicks, amplify your focus.

WHISPER QUIET CLICKS - Reduce distractions with 90% less noise, perfect for focused workspaces.
ECO FRIENDLY INNOVATION - Made with up to 48% recycled plastics—style meets sustainability.
UNIVERSAL COMPATIBILITY - Seamlessly works across Windows, macOS, Linux, iPadOS, Android, and Chromebook.
ALL DAY COMFORT ANYWHERE - Slim, ambidextrous design fits naturally in your hand and your bag.
EFFORTLESS BLUETOOTH PAIRING - Connect instantly—no dongle, no hassle, just pure productivity.

The Logitech M240 Compact Silent Bluetooth Mouse delivers a premium wireless experience with ultra-quiet clicks, up to 18 months of battery life, and a reliable 10-meter Bluetooth connection. Its sleek, ambidextrous design fits comfortably in any hand and travels effortlessly, while eco-conscious recycled materials make it a smart choice for the modern professional. Compatible with all major platforms, it’s the perfect blend of performance, portability, and sustainability.

Specifications

ASIN	B0BXNR9DB6
Additional Features	Lightweight, Portable, Soundless, Wireless
Antenna Location	Gaming, Office
Battery Average Life	18 months
Best Sellers Rank	#1 in Computer Mice
Brand	Logitech
Button Quantity	3
Color	Graphite
Compatible Devices	Laptop
Connectivity Technology	Bluetooth
Customer Reviews	4.4 4.4 out of 5 stars (11,291)
Embellishment Feature	Logo
Enclosure Material	Recycled Plastics: The plastic parts in M240 Silent Bluetooth Mouse include certified post-consumer recycled plastic to give a next life to plastic from old consumer electronics and help reduce our carbon footprintGraphite plastics: 48% of recycled material
Global Trade Identification Number	00097855187673
Hand Orientation	Ambidextrous
Hardware Platform	Mac, PC
Included Components	1 AAA Battery, M240 Silent Mouse, User Documentation
Item Dimensions L x W	1.54"L x 2.36"W
Item Type Name	Computer Mouse
Item Weight	73.8 g
Manufacturer	Logitech
Mfr Part Number	910-007113
Minimum Required Operating System Version	ChromeOS 137, Debian 12.0 Bookworm, Fedora 39, Fire OS 8, Linux Mint 21.3, Mac OS 13 Ventura, Manjaro 24 Virgo, Ubuntu 22.04 Jammy Jellyfish, Windows 11, iPadOS 17
Model Name	M240 Silent
Model Number	910-007113
Mouse Maximum Sensitivity	1000 dots_per_inch
Movement Detection	Optical
Number of Batteries	1 AAA batteries required. (included)
Operating System	Linux
Power Source	Battery Powered
Range	10
Style Name	Bluetooth
UPC	097855187673
Unit Count	1 Count
Warranty Description	1 Year Limited Hardware Warranty

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HK$273

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

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