1. This is a mini keyboard with custom functions, Type-C to USB interface, no driver required, plug and play.2. All key functions can be set on the standard Windows keyboard, and complex shortcut keys can be realized with one key. The keyboard has its storage function.3. After setting on Windows system, it can be used on systems that support usb protocol such as Linux and MacOS.4. Simple operation, easy to carry when connecting multiple keyboards.5. The knob can be set to zoom in and out, switch the previous song, the song, volume up, volume down, pause, play and other functions, which is a good helper for assistance.Product name: small keyboardFunction: Customize shortcut key settingsNumber of keys: 12 (keys) + 2 knobsCurrent and voltage: DC 5V/1AInterface: type-cKey technology: mechanical shaftSupport system: for Windows/VISTA/Linux (desktop/laptop)Product size: 130x75x37MMMaterial:ABScolour:WhitePackage Contents:1 * mini keyboard1 * USB cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.