72inches virtual glasses LCD display 2* LCD display.Equivalent 3.7V (900mAh), built-in battery About4-5 hours Built in 2G 72inches virtual glassesFunction DescriptionLCD display2* LCD display.Equivalent Resolution480*240(WQVGA)Video formatdisplay movies, photos, e-book,support MPEG, AVI, RM, RMVBAudio formatdisplay music,support MP3, WMA, FLAC, APE, AAC, and PlayFXpicture formatJPEG, BMP, GIF ...