Jrifedptry USB Volume Control Lossless PC Computer Speaker Volume Controller Knob Adjuster Digital Control with One Key Mute, Easy to Use Fine Workmanship

Lossless sound quality. Adjust the audio source directly without affecting the audio quality.suitable for use with desktop or laptop Non-slip mat. There is a soft pad at the bottom, which is stable and non-slip during use Feature: High-quality materialsl housing. matte anti-fingerprint, one-button non-slip rotary button, more comfortable touch and scratch resistance than plastic cover USB plug and play. 360-degree rotatable arc button, easy to use (volume adjustment, mute, up and down, pause), and avoid discomfort caused by edges Broad compatibility. Support for WIN 7/8/10/XP, for , for VISTA, for Android, for iOS (mobile phone needs a suitable universal serial bus adapter cable)