1,Big loud sound,Big battery,Long time play muisc 2,With FM radio 3,Small shape,easy to carry 4,Many colors ... for optional 1,Support Micro SD card for playing music ... :150HZ-18000HZ(±3dB);Power supply:5V\600MA,AC power adapter,USB cable; Signal to noise ratio of power amplifier: ≥80dB6,Built-in big ...