It adopts BT V4.2 technology and is compatible with most BT devices such as smartphone and tablet, which not only reduces standby power consumption, but also improves transmission distance and stability. Intelligent noise reduction capacitive pickup, singing without howling, recording without breaking sound, to achieve real low noise and high fidelity, clear and delicate voice. Enhanced with 5W*2 stereo drivers, Professional digital mixing chip and 360 degree intelligent sound capture, lounder, clearer and more powerful sound. Multi-function adjustment panel, with individual treble volume, bass volume, echo effect volume, music volume, and voice singing volume adjustment, you can get the sound just the way you want it. It built-iIt built-in 2600mAh rechargeable battery, gives you up to 6-8 hours fun, Repeatedly charged it without replacing batteries.