Function： High-speed UB1.1 interface legant, simple and ultra-thin design, 7 colors backlight and built -in FM. with Li battery, can charger MP3 , MP2, MP1 and WMA file format compatible 8 different sound effect equalizers Song title and lyric are simultaneously displayed on the screen in English, simplified Chinese and traditional Chinese. A-B repetitive reading, follow -up reading, and multiple loop playback USB HDD BOOT function USB2.0，Flash disk 16 country language 36hours ultra-long time high quality recording, loop playback One charger