1.The keyboard has seven-color adjustable lights and two levels of adjustable brightness. You can choose your favorite color and brightness according to your own preferences.
2.Both the keyboard and mouse are rechargeable (charging cable is provided). Two or three hours of charging, you can use 168 hours, about a month.
3. The Bluetooth keyboard is compatible with four main operating systems: IOS/Android/Windows/MacOS, and provides system-specific function keys for each operating system. Any Bluetooth-enabled device can be easily paired, such as laptops, computers, tablets, smartphones, etc., with a wide range of compatibility.

<span style="font-size:18px;font-family:" "="">1.The keyboard connects via bluetooth, and the mouse can either connect via bluetooth or via a USB receiver. (Your device needs to have bluetooth function, if not, you need a bluetooth adapter, which is not included)
2.Changing languages requires changing languages on the device, not on the keyboard.
3.Press ☀ once to turn on the backlight.
4.Press ☀ button twice to switch the backlight mode to the breathing light mode.
5.Press ☀ three times to turn off the backlight.
6.Hold" Fn " then press the "☀" to control the brightness
7.Press the "RGB" Button can change the color, Colorful can be switched cyclically, and retain memory function.