The Keychron M4 is a lightweight wireless gaming mouse. It features an unusually small, symmetrical shape that's designed exclusively for use with a fingertip grip. It features PixArt's PAW3395 sensor and supports a maximum polling rate of 4000Hz.
Our Verdict
The Keychron M4 is a decent mouse for work use, but it's not designed with it in mind. It has impressive build quality and supports multi-device pairing with up to two devices using its 2.4GHz receiver and/or Bluetooth. Its unconventional shape is only suitable for a fingertip grip type, which might get uncomfortable for long periods. Also, its scroll wheel lacks useful features like a free scrolling mode and L/R tilt inputs.
- Supports Bluetooth and multi-device pairing.
- Great build quality.
- Small size and shape only suitable for a fingertip grip.
- Scroll wheel lacks a free-scrolling mode and L/R tilt inputs.
The Keychron M4 is a fantastic mouse for FPS gaming. It's very lightweight, making it extremely easy to move precisely and accurately. It has remarkable performance, too. Its maximum polling rate of 4000Hz and extremely low click and sensor latency result in an incredibly responsive gaming experience. Its unconventional shape is only suitable for a fingertip grip, so it's not a good option if you have large hands or use a palm or claw grip.
- Extremely lightweight.
- Maximum wireless polling rate of 4000Hz.
- Remarkably low and consistent click and sensor latency performance.
- Great build quality.
- Small size and shape only suitable for a fingertip grip.
The Keychron M4 isn't explicitly designed for MMO gaming but is still good for this use. It has great build quality and excellent raw performance, providing a responsive gaming experience. You can remap its buttons using its companion software, but it has fewer side buttons than dedicated MMO mice. Also, its unusual shape is only suitable for a fingertip grip, which might be uncomfortable for long gaming sessions.
- Extremely lightweight.
- Maximum wireless polling rate of 4000Hz.
- Remarkably low and consistent click and sensor latency performance.
- Great build quality.
- Small size and shape only suitable for a fingertip grip.
- Significantly fewer side buttons compared to dedicated MMO gaming mice.
The Keychron M4 mouse has remarkable raw performance. It has outstanding click latency and a superb sensor that's accurate and precise. It also supports a maximum polling rate of 4000Hz, delivering slightly more consistent performance over a standard 1000Hz polling rate. However, using higher polling rates also requires considerable CPU resources and consumes battery power much more quickly.
- Maximum wireless polling rate of 4000Hz.
- Remarkably low and consistent click and sensor latency performance.
Changelog
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Updated Nov 10, 2025:
We've added a link to the G-Wolves Fenrir Max to the Hand Size Recommendation section.
- Updated Aug 19, 2025: We've converted this review to Test Bench 1.5.1. This update removes less relevant or redundant elements, including several videos. We've also adjusted our Sensor Latency testing, resulting in minor score changes. See our full 1.5.1 changelog for details.
- Updated May 16, 2024: Review published.
- Updated May 10, 2024: Early access published.
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Differences Between Sizes And Variants
The Keychron M4 is available in black or white with a maximum polling rate of 4000Hz or 1000Hz. We bought and tested the black 4000Hz model. You can see the label of our unit here.
Popular Mouse Comparisons
The Keychron M4 is a lightweight wireless gaming mouse with a very small shape designed for use specifically with a fingertip grip. It's about half as long as an average gaming mouse, which contributes to how lightweight it is. It's not as versatile as other gaming mice since most are designed to suit a wider range of grip types and hand sizes. Other mice we've tested with similar designs include the Zaunkoenig M2K and the G-Wolves HSK Pro 4K.
For other recommendations, see our picks for the best wireless gaming mice, the best FPS mice, and the best lightweight mice.
The Keychron M4 and the Razer Viper Mini Signature Edition are lightweight wireless gaming mice. The Keychron has a very small shape that's designed exclusively for fingertip grip. In contrast, the Razer has a much more conventional shape but employs an exoskeleton-like magnesium shell designed to save weight. Both mice have excellent performance, but the Razer has a higher maximum polling rate of 8000Hz compared to the Keychron's 4000Hz maximum, contributing to its better overall raw performance.
The Keychron M4 and the G-Wolves HSK Pro 4K are high-performance, lightweight, wireless gaming mice. They're both extremely small and designed to be used exclusively with a fingertip grip. While the two have similar shapes, the Keychron is noticeably longer but still very small. They both use the same sensor and have remarkable raw performance that's suitable for casual and competitive gaming. The Keychron has better build quality, a larger battery, and Bluetooth connectivity.
The Keychron M3 Mini and the Keychron M4 are lightweight wireless gaming mice. The M4 has an unusual shape, is much smaller than the M3 Mini, and is only suitable for a fingertip grip. It's also significantly lighter and has better overall sensor performance.
The Keychron M4 and the Logitech G PRO X SUPERLIGHT 2 are lightweight wireless gaming mice. The Keychron has an unusually small shape that's designed specifically for use with a fingertip grip. In contrast, the Logitech has a much more conventional shape that's suitable for a wide variety of hand sizes and grip types. The two perform similarly otherwise, but the Keychron is significantly lighter thanks to its size, and the Logitech supports a higher maximum polling rate of 8000Hz.
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