1.MP3 GLASSES 50 inch wireless vide glasses 2.The built-in 2 GB ... less than 60g 4.4-5 hours for work 50inch mp3 glasses/Eyewear video glassesModel No.:VG280(50inch video glasses)Accessories ... , e-book,support MPEG, AVI, RM, RMVBAudio formatdisplay music,support MP3, WMA, FLAC, APE, AAC, and PlayFXpicture formatJPEG, BMP, GIF ... (mm)w175 x h250 x d185Working temperature-5°C - 50°CCertificateCE/RoHS/FCC