Keychron M4 4K Mouse

The Keychron M4 4K Mouse is a lightweight, compact option suited for gamers who prioritize speed and portability. Its small size and low weight make it a good fit for fingertip or claw grip users with smaller hands. It offers flexible connectivity and high sensor precision, appealing to those who want a versatile mouse for both wired and wireless use. It may be less ideal for users needing larger ergonomics or extensive button layouts.

Sensor & Tracking

The mouse uses a PixArt PAW3395 sensor, supporting DPI from 100 to 26,000, allowing precise sensitivity adjustment for different gaming styles. Polling rates reach 4000 Hz in wired and 2.4 GHz modes, which can reduce input delay, while Bluetooth mode lowers polling to 125 Hz, possibly increasing latency. Adjustable lift-off distance helps prevent unintended cursor movement when repositioning the mouse.

Shape & Ergonomics

With a 35g weight and very small form factor, this mouse suits fingertip and claw grips best. Its lightness supports quick movements but may feel less stable for palm grip users or those with larger hands. The compact design favors portability but may reduce comfort during extended sessions.

Connectivity

The mouse connects via wired USB-C, Bluetooth 5.1, or a 2.4 GHz wireless receiver shaped like a keyboard. Wired and 2.4 GHz modes offer higher polling rates, beneficial for competitive play. Bluetooth provides convenience but at a lower polling rate, which may impact responsiveness. Battery capacity is 300 mAh, but exact runtime is unknown.

Buttons & Software

Main buttons use Huano micro switches, known for tactile feedback and durability. Users can reassign keys and adjust DPI or polling rates through custom software, though DPI and polling can also be changed without software. This flexibility supports personalized setups without mandatory software use.

Trade-offs

The ultra-lightweight and small size may compromise comfort for larger hands or long gaming sessions. Bluetooth mode’s lower polling rate can affect responsiveness compared to wired or 2.4 GHz modes. Battery life details are not provided, so wireless endurance is uncertain. The included 4K wireless receiver’s keyboard shape may be less convenient for some setups.