Sunglasses MP3+Bluetooth

Specifications:
A.Glasses
1.Lens of Polaroid from America company
2.TR 90 Flame
3.Shock proof and Anti-static electricity
B.Audio
patible formats: MP3/WAV/WMA
2.Stereo sound
3.Voice output power: 5MW+5MW
4.Voice output frequency: 20Hz-20Khz.
C.Battery
1.continuous playing time: 5 hours
2.Recharging time: 3 hours
3.Built-in lithium-ion polymer battery: 3.7V, 150mAh
4.Automatically detected battery voltage and capacity
5.Auto power off
D.Memory storage
1.Available flash memory size: 128MB/256MB/512MB/1G/2GB
2.Standard USB 2.0 port
3.Integrated USB drive
4.Share same USB port for download, upload and charge