1. One key to achieve key combination, such as Ctrl C 2. One key input a series of keyboard action, such as enter the password 3. Record mouse and keyboard actions and reproduce them with one key 4. Support automatic keys, a set of action cycle execution 5. Support burst function, continuous click on some keys or continuous click on the mouse;6. Support mouse and keyboard,Icombination shortcut keys, such as Ctrl wheel, Alt left key 7. Support media function,volume adjustment,next song, etc. USB Bluetooth 2.4G Wireless three-mode, you can plug in the receiver after you get it, connect to a computer that does not support Bluetooth function, or use a data cable to connect to the computer.if you want to change to Bluetooth mode, you need to install software. Basic function: 1. Replace any key on the keyboard 2. Realize the mouse function, right-left, move, or click at a fixed point Colour:black / silver Material:Aluminum Alloy Precautions 1. The functions displayed on the details page can be realized on the computer. 2.Android phones and pad do not support video fast forward, fast rewind, pause and short video brushing. 3. For Apple mobile phones and pad do not support video fast forward and fast rewind pause, short video brushing, and the turning of some novel software. 4. Desktop does not support screen brightness adjustment function note:cable and receiver are random colors, don't accept the specified color Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 1 * volume controller 1 * USB data cable 1 * USB receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.