Cooler Master

Cooler Master MM731

Expert rating8 / 10

View on AmazonView on legacy.coolermaster.com

Connectivity:: Wireless
Weight:: 49g
Max DPI:: 19,000
Polling Rate:: 1000Hz

Consumercarts is reader-supported. Learn more

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: Cooler Master Last updated: 2026-09-12

Where to buy

AmazonGo to store

Cooler Master MM731 Review

The MM731 is Cooler Master's ultralight honeycomb wireless mouse, coming in at just 49g with tri-mode connectivity and a PAW3370 sensor at a price well below most sub-50g competitors.

Cooler Master's MM line has quietly built a following among value-focused lightweight mouse buyers, and the MM731 is their sub-50g entry: a fully honeycombed shell, both 2.4GHz and Bluetooth connectivity, and PTFE skates, all at a price that undercuts the Finalmouse and Lamzu competition by a wide margin.

Who It's Built For

Budget-focused players chasing sub-50g wireless weight who don't need a boutique brand name.

Comparison to Alternatives

Against the Cooler Master MM712 already in this catalog, the MM731 is significantly lighter thanks to full honeycomb venting and drops a bit of shell rigidity in exchange. It undercuts the Finalmouse UltralightX and Glorious Model O 2 Pro on price while landing in a similar weight class.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8 / 10

One of the best value-for-weight wireless mice available; it just lacks the sensor polish of pricier flagships.

Best for

Budget shoppers chasing sub-50g wireless weight
Ambidextrous claw and fingertip grip users
Players who want Bluetooth as a backup connection

Not for

Buyers who dislike honeycomb/vented shells
Palm grip users wanting a fuller shell
Anyone wanting 4000Hz+ polling

Specifications

What these specs mean

Identity

Brand	Cooler Master
Model	MM731

Design

Connectivity	Wireless (2.4GHz), Bluetooth
Grip Type	Ambidextrous
Shape	Symmetrical, honeycomb

Performance

Sensor Tier	High
Buttons	6
Polling Rate	1000 Hz

Sensor

Sensor Model	PixArt PAW3370, up to 19,000 DPI

Weight and size

Weight	49 g

Battery

Battery Life	Up to 70 hours

Buttons and switches

Switch Type	Optical

FAQs

What are the key specifications of the Cooler Master MM731 (Wireless/Ambidextrous Symmetrical/49g/PAW3370 Sensor up to 19,000 DPI/1000Hz/70hr Battery/Optical Switches)?

Key specs for the Cooler Master MM731: Sensor PixArt PAW3370, up to 19,000 DPI, Connectivity Wireless (2.4GHz), Bluetooth, Polling Rate 1000 Hz, Grip Type Ambidextrous, Shape Symmetrical, honeycomb, Switches Optical.

Will the Cooler Master MM731 (Wireless/Ambidextrous Symmetrical/49g/PAW3370 Sensor up to 19,000 DPI/1000Hz/70hr Battery/Optical Switches) work with my current setup?

The Cooler Master MM731 (Wireless/Ambidextrous Symmetrical/49g/PAW3370 Sensor up to 19,000 DPI/1000Hz/70hr Battery/Optical Switches) lists Sensor is PixArt PAW3370, up to 19,000 DPI. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Cooler Master MM731 (Wireless/Ambidextrous Symmetrical/49g/PAW3370 Sensor up to 19,000 DPI/1000Hz/70hr Battery/Optical Switches) best suited to?

Best suited to: Budget shoppers chasing sub-50g wireless weight; Ambidextrous claw and fingertip grip users; Players who want Bluetooth as a backup connection.

What are the drawbacks of the Cooler Master MM731 (Wireless/Ambidextrous Symmetrical/49g/PAW3370 Sensor up to 19,000 DPI/1000Hz/70hr Battery/Optical Switches)?

Not the best fit for: Buyers who dislike honeycomb/vented shells; Palm grip users wanting a fuller shell; Anyone wanting 4000Hz+ polling.