1、Programmable Keys: All keys are programmable, you can set all keys function of standard Win keyboard. 2、3 Keys Design: This OSU keypad adopts mini size and 3 keys design, and USB cable is detachable, so you can connect a keypad (plug and play) and another keyboard on the same computer at the same time. 3、Knob Design: This gaming keypad is equipped with knob function that can be set to zoom in and out, up and down, volume increase, volume decrease, pause, play and other functions. 4、RGB Backlit: This programmable keypad also features RGB backlit, creating cool gaming ambience. 5、Wide Application: This 3 key keypad is widely used in office, games, music, media, industrial control, laboratory, production line testing and other fields. Item Type: 3 Key Keypad Material: Acrylic Lighting Effects: RGB Key Type: 3 Key Mechanical Keyboard,1 Knob (Knob Can Be Pressed) Applicable Equipment: Computer Universal Type 1 x 3 Key Keypad 1 x USB Cable