... )USB Data Transmission SpeedHigh-speed USB2.0Battery Capacity900mAh/3.7VSignal-to-Noise≥85DBBand Response20HZ-20KHZEarphone Output Power≥3mW+3mWFM Emission Band76MHZ ... ≥15 hours (backlight, emission, TVOUT close)Karaoke Accompaniment Music FormatMP3, WAV, WMA, OGG, MIDI, AVI and MP4, AVI, VOB, DAT, ASF ...