Features: You can customize the button to achieve keyboard function, mouse function, multimedia function, character string function, game function and macro definition function. Designed with mechanical blue switches, strong paragraph sense, crisp sound. The button curve fits ergonomic design, comfortable to type. With anti-slip pads at the bottom, no need to worry about keyboard slipping. Wide application, suitable for office, game, multimedia, etc. This product provides key definition setting software based on Windows system, which can be used in various systems after setting.(Note: If you use Linux or Mac, you need to set it up on Windows first, then plug the foot switch into your device and run it to use) Note: The one-click open/start function cannot be used in wireless mode. Specification: MK321Pro Wireless triple mode 2.4G + Bluetooth/ MK321U Wired version Material: Plastic colour: Black Package Contents: 1 x Mini Keyboard 1 x usb cable 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.