Type-C to USB interface, no driver required. This button can also be used to achieve complex operations, serving as a great helper for office, gaming, music, media, and industrial control. Features a mechanical key switch for durability. Supports ergonomic design and hot-swapping. Available operating systems: Windows/Vista/Linux. Wireless connectivity for computers, and Bluetooth-compatible for mobile phone volume control, previous track, and track functions. Power and Voltage: DC 5V/1A Interface: Type-C Keys: 12 Knobs: 2 Product Size: 130x72x35mm/5.12x2.83x1.38in Product Weight: 170 grams Type: Wired Color: Black Material: Plastic Package Contents: 1 x 12 Keys 2 Knob Programmable Keyboard Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.