Mini Keypad: Multifunctional 9-key custom keyboard with 3 dials, supporting up to 18 character quick command overlays, one-key output, for increased convenience. Dual Mode: Features dual modes, supporting USB and BT connections with automatic switching. BT wireless automatically enters sleep mode after 15 minutes of inactivity. 3 Knobs: The knobs have a click function, usable as left and right mouse buttons. The dials can be customized for zoom in/out, pause, play, and other functions. Multifunctional: Delay function adjustable up to 6000 milliseconds. RGB function allows for adjustment of various light colors. Includes storage function. Applicable Scenes: Suitable for office, gaming, music, media, industrial control, laboratory, production line testing, and other areas. Type: Mini Keyboard Material: Acrylic, PCB Purpose: Applicable for office, gaming, music, media, industrial control, laboratory, production line testing, and other areas Connection Mode: BT, USB System Support: For Windows, Vista, Linux, OS X Key Life: Up to 50 million times Lighting: RGB Type: Dustproof blue switch Number of Keys: 9 Product Size: Approx. 120 x 115 x 38 mm / 4.7 x 4.5 x 1.5 inches Power and Voltage: DC 5v 1a Operating Temperature: -10℃ to 50℃ Battery Type: 1000 mAh lithium battery (built-in) Includes: 1 x Mini Keypad, 1 x USB Cable