Hiiri Keychron M4-A4 RF Wireless Bluetooth USB Type-C

The Keychron M4 is a super-mini right-hand wireless mouse designed for portability and precise tracking. At only 8.6 cm long and weighing 35 g, it supports RF 2.4 GHz wireless, Bluetooth 5.1 and wired USB Type‑C connections. The M4 uses a PixArt 3395 sensor with up to 26,000 DPI, offers configurable polling rates up to 4000 Hz, and includes Huano 80M micro switches rated to 80 million clicks.

Advantages

The compact 35 g design makes the Keychron M4 easy to carry and use with tablets, laptops or desktops. The PixArt 3395 sensor delivers high resolution and tracking speed for accurate cursor control. Multiple connectivity options (RF 2.4 GHz, Bluetooth 5.1, USB Type‑C) provide flexibility for gaming and office use. Configurable settings via Keychron Engine and onboard DPI/polling buttons allow fast customization without constant software access. A 300 mAh battery provides long runtime depending on polling rate.

Suitable for

Key specifications

How to use

Charge the mouse via the USB Type‑C port before first use. Switch between RF 2.4 GHz, Bluetooth 5.1 and wired mode using the device selector (refer to the user manual for exact button placement). Adjust DPI and polling rate using the external DPI and polling buttons on the mouse for on-the-fly changes. For additional remapping, macros and advanced settings (LOD, DPI steps, polling-rate options) install Keychron Engine on your computer and follow the software prompts to save profiles.

Recommendations

For the best balance of runtime and responsiveness, use 1K polling rate during extended work sessions and switch to the higher polling rate (up to 4000 Hz) for fast-paced gaming. Maintain firmware and Keychron Engine updated and keep the sensor surface clean for optimal tracking.