Features: 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) PackageList:1 x Mini Keypad 1 x USB Cable 4 x Anti Slip Pad 1 x User Manual