... 4)Power: built-in 3.7V lithium battery or USB 5V supply; Interface: USB 2.0 5) Photo Play,can storage: 107 ... and Display 9) Contrast set and Background light set10) Support USB connect,Operation System: Win2000/XP11) Working Time: 4-5 hours ... ,GIF,MP3, WMA,MPEG1 MPEG2 MPEG4,DIVX,AVI,SD Card,MMC Card,USB 2.0,stereo speaker,Slide show,CE,FCC,UL,RoHS ...