Specification: Item Type: Mini Keypad Material: Acrylic, PCB Purpose: Applicable to Office, Games, Music, Media, Industrial Control, Laboratory, Production Line Testing and Other Fields Connection Mode: BT, USB System Support: for Windows, for Vista, for Linux, for OS X Key Life: Up to 50 Million Times Lights: RGB Type: Dustproof Blue switch Number of Keys: 9 Product Size: Approx. 120 x 115 x 38mm / 4.7 x 4.5 x 1.5in Current and Voltage: Dc 5v 1a Working Temperature: - 10 ? to 50 ? Battery Type: 1000mah Lithium Battery (built In) packing list: 1 xMini Keypad 1 x USB Cable

3 Knobs: The knob has a click function, which can be used as the left and right mouse buttons. The knob can be set with zoom in, zoom out, pause, play and other functions. Dual Mode: Dual mode keyboard, supporting USB and BT connection modes, and automatic switching. BT wireless will automatically enter the sleep mode after 15 minutes of inactivity. Mini Keypad: Multi function 9 key customized keyboard with 3 knobs, support for up to 18 character shortcut key superposition, one key output, more convenient. Applicable Scene: Applicable to office, games, music, media, industrial control, laboratory, production line testing and other fields. Multifunctional: The delay function can be set up to 6000 milliseconds. With RGB function, various light colors can be adjusted. With storage function.