From afar, it's like a game machine. Take a look at karaoke sound card to help you embark on journey The intelligent noise reduction chip can further filter the recorded noise and carry out secondary noise reduction processing, so as to make the sound of input sound card clearer and realize the clear recording of 10 kinds of effects sound are on the touch. With the sound effect of live control field, the background accompaniment is introduced into one key control field, which can help you to stir up the live broadcast atmosphere Turn on the phone's blue-tooth and search for "V300 PRO", blue-tooth pairing and singing can transfer accompaniment music through the phone. From now on, say goodbye to cumbersome connections and plug-, and start the era of wireless Strong compatibility, plug and play, mobile phone/computer universal The built-in battery has a and can be used for about 6-8 hours when fully . You can enjoy the live karaoke Specifications : model: V300 PRO Input Voltage: 5V Charging Battery Capacity: 1000 mAh colour:Black material:abs Size: 157 x 78 x 15mm / 6.18 x 3.07 x 0.5 inches Package Contents: 1 x Sound card 1 x Accompaniment line 1 x Live line 1 x Charging line Only the above package content, other products are not included. Note: Light 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.