1) USB/SD/MMC Card support
2) Voltage booster circuit
3)With FM radio function
4)Earphone function
5)Li-ion battery removable
6)Volume control with blue led light
7)Can play MP3/WMA/computer/Ipod format music
8)Long-distance control
9)Play all audio with a 3.5mm line-in jack
10)DC 5V power supply by USB cable
11)LED indicator for indicaating the status of opening and closing and li-ion battery charging indicator