Keychron M5 vs BM22: Which Wireless Mouse Should You Buy?
By Keychron | Custom Mechanical Keyboards for Mac, Windows ... | Published: 2026-10-15
Category: Buying Guides
Compare the Keychron M5 ergonomic mouse and BM22 compact mouse on design, sensor, and price to decide which fits your grip and workflow.
Quick answer
Choose the Keychron M5 Wireless Ergonomic Mouse if you want a vertical shape to reduce wrist strain and a higher-tier PixArt sensor. Choose the Keychron BM22 Wireless Mouse if you prefer a familiar compact shape, need reliable everyday pointing, and want to spend less. Both support 2.4 GHz, Bluetooth, and USB wired connections.
How the two mice differ
The M5 is built around a vertical ergonomic design that changes your hand angle to reduce wrist strain during long hours. The BM22 uses a compact, traditional shape that most people already know how to grip. That single design choice drives most of the other differences: the M5 prioritizes comfort and sensor headroom, while the BM22 prioritizes simplicity and low cost.
Sensor and connection: what actually changes your day
The M5 offers PixArt 3311 and PixArt 3950 sensor options, so you can pick the sensor tier that matches your sensitivity and tracking needs. The BM22 uses the PAW3212 sensor, which is a reliable choice for standard office and browsing tasks. Both mice support 2.4 GHz, Bluetooth, and USB wired connections, so neither locks you into one setup. If you switch between a laptop and a desktop, both let you do that without a dongle swap.
Price and value: where your money goes
At catalog prices, the BM22 is the budget pick and the M5 costs more. The M5's higher price reflects its vertical ergonomic design and the option to choose between two PixArt sensors. The BM22 keeps costs down by using a single sensor and a compact shell. Neither approach is wrong; the question is whether wrist comfort and sensor choice are worth the difference to you.
Fit and grip: match the mouse to your hand
The M5's vertical design encourages a handshake-like wrist position, which can help if you feel strain after long sessions. The BM22's compact shape suits smaller hands or anyone who prefers a lighter, more familiar feel. If you already know you dislike vertical mice, the BM22 is the safer starting point. If you have never tried a vertical mouse and wrist discomfort is your main complaint, the M5 is the more targeted choice.
Setup and switching: what to expect
Both mice connect via 2.4 GHz, Bluetooth, or USB wired, so you can pair them with a laptop, desktop, or tablet without adapters. The M5's sensor and switch options mean you should decide your preferred configuration before ordering. The BM22 keeps choices simple with color and sensor options only. If you want to fine-tune feel, the M5 gives you more levers; if you want to order once and move on, the BM22 is quicker to decide.
Decision rules: pick your mouse in under a minute
- If wrist strain is your main complaint: Choose the Keychron M5 Wireless Ergonomic Mouse. Its vertical ergonomic design is built to reduce wrist strain during long hours, and you can pick between PixArt 3311 and PixArt 3950 sensors. Best for comfort-first users.
- If you want the lowest-cost reliable mouse: Choose the Keychron BM22 Wireless Mouse. The PAW3212 sensor handles everyday pointing, and the compact shape keeps it simple and affordable. Best for budget-focused buyers.
- If you switch between devices often: Both mice support 2.4 GHz, Bluetooth, and USB wired, so either works. Pick based on shape and sensor, not connectivity. Connectivity is a tie; decide on ergonomics and sensor.
- If you prefer a familiar grip: Choose the BM22. Its compact, traditional shape avoids the learning curve of a vertical mouse. Best for first-time wireless mouse buyers.
Key facts at a glance
- Keychron M5 Wireless Ergonomic Mouse: Keychron M5 Wireless Ergonomic Mouse has the best PixArt 3311 sensor and PixArt 3950 sensor. It supports 2.4 GHz, Bluetooth, and USB wired connections. Featuring a vertical ergonomic design for enhanced comfort and reduced wrist strain during long hours of use. The vertical shape targets wrist comfort, and the two sensor options let you choose your tracking tier. Triple connectivity means it fits most desk setups without extra adapters.
- Keychron BM22 Wireless Mouse: Keychron BM22 Wireless Mouse has the reliable PAW3212 sensor. It supports 2.4 GHz, Bluetooth, and a USB wired connection. A single reliable sensor and compact shape keep the BM22 simple and affordable for everyday pointing, with the same three connection modes as the M5.
Who should buy which
Best for
- People who feel wrist strain after long computer sessions and want a vertical ergonomic shape
- Users who want to choose between PixArt 3311 and PixArt 3950 sensors
- Anyone who needs 2.4 GHz, Bluetooth, and USB wired in one mouse
Not for
- Buyers who want the lowest possible price and a simple, familiar shape
- People who dislike vertical mice or prefer a compact traditional grip
- Users who do not need multiple sensor options
