Customize buttons for keyboard, mouse, multimedia, text string, gaming, and macro definition functions. USB Wired + 2.4G Wireless dual-mode connection, easily switch as needed. Designed with mechanical blue switches, offering a strong tactile feel and crisp sound. The keycaps follow an ergonomic design for comfortable typing. Features anti-slip pads on the bottom to prevent the keyboard from sliding. This product provides keyboard definition setting software based on the system, which can be used on systems after setup. (Note: If using Linux or macOS, you need to set it up first, then connect the foot pedal to your device and run it to use it). Wide Application: Suitable for office, gaming, multimedia, etc. Note: The one-click open/start function cannot be used in wireless mode. Type: Mini Keyboard Model: MK321G Number of Keys: 3 Connection Mode: USB + 2.4G Wireless Mechanical Switch: Blue Switch Interface Type: Type-C Lifespan: 50 million times Working Voltage/Current: 5V@15mA Setting Software Download Address: https://..cn/certificate?_l=zh_CN User Manual: You need to download and install the settings on your computer first. To change key values, connect to the computer with a cable, use the software to change them, and then pair the device with 2.4G to use it. Color: Black Material: ABS Package Contents: 1 x Keyboard 1 x Data Cable 1 x 2.4G Receiver Only the above package contents are included; other products are not. Note: Light reflections and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3 cm.