Multimedia Volume Knob: The VOL20 is a versatile desktop volume controller with Bluetooth wireless and USB-C connectivity, offering real-time volume adjustments. Perfect for music lovers, gamers, and professionals who demand precise volume control. Multi-Functional: Simple yet versatile, the knob's button lets you easily control play, pause, previous track, next track, mute, and volume adjustment. With just one knob, you can conveniently manage all your music playback controls. All-Metal Construction: Precisely crafted from zinc alloy using CNC machining, ensuring a premium feel and lasting durability. The large 55mm diameter design adds substantial weight, providing a stable and slip-free experience during operation. RGB Lighting: Offers constant on, auto-off after 5 seconds, spectrum cycling, and off modes. Four modes at your fingertips—freely switch between colors and lighting modes to create the perfect ambiance just the way you like it. Effortless Installation: Compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers. Simply plug and play with no complicated setup required