1,Big loud sound,Big battery,Long time play muisc 2,With FM radio 3,LED screen 4,Many colors for optional 1,Support Micro SD card and USB flash drive etc.for playing music.2,Support earphone output,AUX input 3,FM radio4,LED Display Interface5,Output: RMS-3W, THD=10% ;Frequency:150HZ-18000HZ(±3dB);Power supply:5V\600MA,AC power adapter,USB cable; Signal to noise ratio of power amplifier: >80dB 6, ...