Multifunctional Mini Aluminum USB Volume Control Speaker Audio Sound Adjuster Volume Controller for Mobile Phone Laptop PC Producrt Features: 1. No any configuration, plug and play. 2. Volume is adjustable from 1db - 100db, no any sound attenuation. 3. Endle 360 degree rotating shaft is durable and more suitable for long time use. 4. No sound quality damage and noise if audio cable is disconnected or under malfunction. 5. Breathing light will be on once pre or rotate volume button. 6. One-touch mute function - pre the button to stop playing, pre again back to music. 7. Metal body and shell, rotating shaft, breathing light, USB cable. 8. Big base, HIFI appearance, stable performance, single-finger operation, quick response and multi functions. 9. Wide applications - video watching, play games, volume controller for wedding, conference and celebration, etc. Specifications: 1. Item: USB volume controller 2. Shell material: aluminum 3. Metal body 4. Color: black, blue 5. USB cable length: about 1.5M 6. Support operating system: Windows (XP / Win7 / Win8 / Win10, etc.); Apple Computer; Linux; Vista; Android system. 7. Weight: about 150g 8. Size: about 6.5 * 5 * 4cm Package Included: 1 * USB Volume Controller 1 * USB Cable 1 * User Manual Product Photos: