Wide range of applications: Mini Game Keyboard System Support: Suitable for Win, Vista, , OS X laptops, office, games, music, media, industrial control, laboratories, production line inspection and other areas9 keys and 3 knobs: This mini gaming keyboard is designed with 9 keys and 3 knobs. Features RGB backlighting and dust-resistant blue switches.Knob Functions: This programmable keyboard has 3 knobs, which can be set to zoom in and out, follow songs, volume up, volume down, pause, play and other functions.Multifunction: This mini keyboard has programmable functions, memory functions and time delay functions. Type from C to USB interface, plug and play, no driver required.Delay Function: The product size of this 9-key gaming keyboard is approximately 120 x 115 x 38mm.Feature:1. 9 Keys and 3 Knobs: This mini gaming keypad is designed with 9 keys and 3 knobs. Featuring RGB backlit and dustproof blue switch.2. Knob Function: This programmable keypad has 3 knobs that can be set to zoom in and out, following song, the volume up, volume down, pause, play and other functions.3. Multi Function: This mini keypad possesses programmable function, storage function and delay function. Type C to USB interface, plug and play without driver.4. Delay Function: This 9 key gaming keypad also has delay function that can be set to a maximum of 6000 milliseconds.5. Wide Application: This 9 key keypad with 3 knobs is suitable for office, games, music, media, industrial control, laboratory, production line testing and other fields.Specification:Item Type: Mini Gaming KeypadMaterial: Acrylic, Printed Circuit BoardApplication: Suitable for Office, Games, Music, Media, Industrial Control, Laboratory, Production Line Testing and Other FieldsSystem Supported: For Win, for Vista, for , for OS X LaptopKey Life: Over 50 Million TimesLight: RGB BacklitSwitch: Dustproof Blue SwitchNumber of Key: 9Current and Voltage: DC 5V/1AOperating Temperature: Minus 10 to 50Product Size: Approx. 120 x 115 x 38mm / 4.7 x 4.5 x 1.5in ( Manual Measurement, Slight Error May Exist )How to