Features:<br> Application: use it for watching videos, playing games, even will be the best volume controller for various activities, wedding, celebration, meeting, performing and etc. Supports for Win10/8/7/Vista/XP/Mac.<br> Small and delicate, aluminum case, CNC machining process, gold-plated pins, made of metal shell and ALPS rotary shaft.<br> 3.5mm audio in, connect tablet PC, computer, phone, audio player. 3.5mm audio out, connect power amplifier, active speaker, headphone amp.<br> Simple and easy to use, just insert it into your computer, then it will start to work; If you use it with an OTG cable, it can also work for the phone.<br> Mini portable, lightweight, can be taken with you at any time to use, saving space.<br> Specifications:<br> Item Type: Volume Controller<br> Material: Aluminum<br> Color: Black<br> Package Size: Approx.9*7.5*5.5cm / 3.54*2.95*2.17in<br> Package Weight: Approx.88g / 3.1oz<br> Package List:<br> 1 * Volume Controller<br> 1 * User Manual