Glasses -Lens of Polaroid from America co***ny -TR 90 Flame -Shock proof and Anti-static electricity Audio -Co***tible formats: MP3/WAV/WMA -Stereo sound -Voice output power: 5MW+5MW -Voice output frequency: 20Hz-20Khz. Battery continuous playing time: 5 hours -Recharging time: 3 hours -Built-in lithium-ion polymer battery: 3.7V, 150mAh -Automatically ***ected battery voltage and capacity -Auto power off Memory storage -Available flash memory size: 128MB/256MB/512MB/1G/2GB/4GB -Standard USB 2.0 port colors:red/black/silver/blue Bluetooth function V1.1--V1.2 Mp3 function |