Factory Reset - Keychron K4 Benutzerhandbuch

Or press the fn + light effect key.

8. Factory Reset

Trouble shooting? Don't know what's going on with the keyboard? Try factory reset by
pressing fn + J + Z (for 4 seconds)
K4 Bluetooth Mechanical Keyboard Specifications
Number of keys
Switch type
Battery
Working time
Charging time
Charging port
Mode
Bluetooth operating distance
Name of Bluetooth device
Operating Environment
Technical specifications can be subjected to change without notice we apologize for any
inconvenience caused.
100
Mechanical / Optical Switch
4000mAh
Around 70 hours with the backlight on
Around 3 hours
USB Type-C
Bluetooth / Wired
Within 10 meters (open space)
Keychron K4
-10 to 50°C
9