Features: Brand new and high quality Our USB knob Keyboards provides customizable controlling for Multimedias management. Easily adjust Volumes with precisions, enhancing your control . Experience the convenience of our Keyboards with its user friendly button control. The knob feature allows for quick and easy Volumes adjustments, perfect for professional and gamers. Suitable for individuals who require efficient Volumes control functions, our USB knob Keyboards for video editing, music production, and Multimedias tasks. Enhances your productivity with our USB knob Keyboards. Manage Keyboards Volumes operations seamlessly. Elevates your game experience with our USB knob Keyboards. Adjust Volumes. Specifications: Material:ABS Color:White/Black Package Includes: 1 Set USB Volumes Knob note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.