Features:This mini keyboard with custom functions.Type-C to USB interface, no driver, plug-and-play.New appearance design, more powerful, lower power consumption; A-variety of RGB lighting effects The knob for pause/play-, volume-up, volume down and other functions, good helper for attendance. All keys are programmable, compatible with various design software.Wired model: no built-in battery, various RGB light effects, USB power supply; Bluetooth-compatible model: with built-in battery, RGB light effects can be used when connecting USB cable, and RGB light effects are turned -off in wireless state; Specifications:Item: Mini KeyboardKeys:6 Keys and 1 KnobMaterial: ABS-Mode:Wired/Bluetooth-compatibleSize: approx 120x57.5x38.5mm/4.72x2.26x1.51inColor: Black/White Charge: Type C USB Note:Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand.Please allow 0-2mm error due to manual measurment. Package includes:1 PC x Mini Keyboard