Feature: 1. Programmable Keys: All keys of this mini keypad are programmable, you can set all keys function of standard for Win keyboard. 2. Knob Function: This programmable keypad is designed with 2 knobs that can be set to zoom in and out, following song, the volume up, volume down, pause, play and other functions. 3. Wired or Wireless: This gaming keypad supports wired USB or wireless BT connection, offering more choices and flexibility. 4. Mini Size: This keypad with 12 keys and 2 knobs also features mini size and compact design, and it can be connected to your computer with another keyboard. 5. Wide Application: This 12 key keypad is suitable for office, games, music, media, industrial control, laboratory, production line testing and other fields. Specification: Item Type: Mini Keypad Material: Acrylic Switch: Blue Switch Key Type: 12 Key Mechanical Keyboard + 2 x Knob (Knob Can Be Used As a Key to Press) Applicable Equipment: Computer Battery Type: Inbuilt 1200mAh Lithium Ion Battery (Battery Included). Package List: 1 x Mini Keypad1 x USB Cable4 x Anti Slip Pad1 x User Manual