1. Convenient Operation: This keyboard features a 3-button lever design, allowing you to easily adjust volume without the need for additional software or drivers, making it very easy to use. 2. Sound: This keyboard supports USB recording, which can help you achieve recording results, allowing you to better handle music, videos, and other content. 3. Multiple Function Options: In addition to volume adjustment and recording functions, this keyboard also supports a variety of shortcut key customization settings, enabling efficient completion of tasks such as gaming and design work. 4. Mechanical Feel: The keyboard uses a mechanical keyboard design, providing a comfortable feel and longer usage life, allowing you to maintain a high-efficiency input experience for extended periods of use. 5. Multiple Device Compatibility: This keyboard supports Bluetooth connection and MIDI design functions, allowing it to connect with a variety of devices and meet more functional requirements. Color: Black Material: plastic Package Contents: 1 x 3 Keys Keyboard Only the above package content, other products are not included. Note: Light reflection 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.