Easy to install and use better stability, better signal, clear sound quality without delay. It has a grinding feel, scratch resistant, comfortable and delicate touch.It gives you a delicate sensory experience. Support mobile phone computer usage, support single headset usage. Please note:There is slight color difference in the product, which is subject to the actual product and does not affect use. Colour:Black Material:Plastic Package Contents: 1 * Sound Card 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.