Feature:1. DIY Programmable: All keys are programmable. All key functions of the standard for Windows keyboard can be set, and a complex combination of shortcut keys can be realized with one key.2. Dual Mode Connection: Support both wired USB and wireless BT dual mode connection, detachable USB cable, easy to use.3. Knob Function: It can not only be rotated to adjust, but also can be used as a button. The knob can be used to set zoom, pause, play and other functions.4. Small and Portable: Small and portable, you can carry it with you, effectively saving desktop space.5. Wide Applications: Suitable for office, game, music, media, industrial control, laboratory, production line testing and other fields.Specification:Item Type: Mechanical Gaming KeypadMaterial: AcrylicKey Type: 9 Keys Mechanical Keyboard, 2 x Knob (the Knob Can Be Used As a Key to Press)Applicable Equipment: Computer UniversalBattery Type: Built in 200mAh Lithium Ion Battery.Package List:1 x Mechanical Gaming Keypad1 x Data Line1 x User Manual