Specification:
1)MP3 function：Support playing MP3、WMA, etc music for
2)With Mini B USB plug，direct connect to co SB cable.
3)Support backup important files and transport any kind of file from one computer to another.
4)No drive needs above the Win98 system
5)Built-in lithium battery， Low power consuming，could play for 6 hours continually.
6)Maintain critical clarity at all angles of vision that maximize protection against sun, wind and side impact.
7)Frame material offers all-day comfort.
8)The flip-up lenses block 100%