... high quality and portable vedio glass 320 with 72" virtual screen Main function -- LCD display + Support video + Music + Picture + e-book +USB ... , AVI, RM, RMVBAudio formatdisplay music,support MP3, WMA, FLAC, APE, AAC, and PlayFXpicture formatJPEG, BMP, GIF with auto scan ... DurationAbout4-5 hoursPower Consumption<0.9WConnect with PC High speed USB2.0Sample Rate8KHz/16KHzMax Power Output(L) ...