Keychron
Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard

Keychron K4 Ultra is a wireless custom mechanical keyboard with a sleek, durable build. It supports 2.4 GHz, Bluetooth, and wired connections. Through the Keychron Launcher web app, users can remap keys and create macro commands on its 96% compact layout. Powered by ZMK firmware, it enables an 8K polling rate in wireless mode while delivering up to 600 hours of battery life. It is also fully compatible with Windows, macOS, and Linux.
Last Updated: September 7, 2026
Specifications
Physical Specifications
- Layout
- Full Size
- Key Count
- 100
- Width
- 391.29mm
- Depth
- 140.27mm
- Height
- 30.87mm
- Weight
- 1.24kg
Mount Type
- Case Material
- ABS
- Plate Material
- Steel
- Hot-swappable
- Yes
- Connectivity
- USB-C + Bluetooth + 2.4GHz
- RGB Support
- Yes
- Keybinding
- Custom
Keycap Profile
- Keycap Profile
- OSA
- Keycap Material
- PBT
- Keycap Printing Method
- Double-shot
- Keycap Included
- Yes
Default Switch
- Switch Profile
- Standard Profile
- Switch Profile
- Keychron Apex Switch
Other
- Battery Capacity
- 4000mAh
- Battery Life
- 600 hours
Vendor Information
keychron
Search on other sites:
