Battery Capacity
The Bluetooth and USB (two in one) waterproof keyboard contains a 250mA
lithium battery.
Switching of USB and Blutooth
When you switch on the keyboard, the default mode would be Bluetooth. Press
Fn+2 to change to USB. Press Fn+1, it would switch back to Bluetooth. If the
switch is turn off, the default mode would be changed to USB.
Connecting Bluetooth for various operation system
When the keyboard first connects to your computer, press FN+C to connect the
Bluetooth.
The multimedia function of the keyboard
Press Fn+E to IOS (Apple) system, FN+Q to Android system, and FN+W to
Windows system.