... USB2.0Sample Rate8KHz/16KHzMax Power Output(L)10mW+(R)10mW(320)hmMP3 Bitrate64Kbps-320KbpsWMA Bitrate64Kbps-320KbpsFrequency Response20Hz-20KHzSNR>85dBAudio Playback Distortion0 ... .03%Language Zh, En, De, It, Pt, NL, Fr, Es, PL, Ru,Tr,Da, Cs ... °C - 50°CCertificateCE/RoHS/FCCWarranty: 1 year 52 inch Virtual 320*240 Video Glasses