1.MP3 GLASSES 50 inch wireless vide glasses 2. ... than 60g 4.4-5 hours for work 50inch mp3 glasses/Eyewear video glassesModel No.:VG280(50inch video ... e-book,support MPEG, AVI, RM, RMVBAudio formatdisplay music,support MP3, WMA, FLAC, APE, AAC, and PlayFXpicture formatJPEG, BMP, ... -320KbpsFrequency Response20Hz-20KHzSNR>85dBAudio Playback Distortion0.03%Language Zh, En, De, It, Pt, NL, Fr, Es, PL, Ru,Tr ...