Long-life rechargeable battery with approximately 50 hrs of cordless sound and USB port for charging devices With a powerful stereo sound and an active subwoofer, the JYX Karaoke Machine can amplify your voice, play the radio or stream tunes without distorting the audio even at higher volumes. Prolonged Warranty https://www.bluetoothspeaker.top/popular-bluetooth-speaker-colorful-led-wireless-bluetooth-audio-high-power-subwoofer-speaker/