DSP o chip allows you to intelligently adjust the sound section to make the o signal in the sound card clearer and stable, and the sound output is more pleasant Built-in professional lithium battery 1000 mAh, which can be used continuously for 4-8 hours to make your live broadcast unimpeded Plug and play, no debugging, one-click effect Intelligent and compatible with many platforms Bluetooth 4.0 protocol Colour: black Material: ABS Size: 18 x 12 x 3cm Package Contents: 1 x sound card 1 x live line 1 x accompaniment line 1 x charging cable Only the above package content, other products are not included. Note: Light shooting 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.