Specifications: 1) Support playing MP3, WMA, music format 2) With Mini B USB plug, direct connect to computer by USB cable 3) Support backup important files and transport any kind of file from one computer to another 4) Built-in lithium battery, low power consuming, could play for 6 hours continually 5) Maintain critical clarity at all angles of vision that maximize protection against sun, wind and 6) Frame material offers all-day comfort 7) The flip up lenses block 100% of all UVA, UVB, UVC and harmful blue light 8) Accessories, USB cable, Install CD, the uses manual rotation back-fro, suitable for all people 9) Unique flex earphone 10) Design free from ear-line when reading or traveling. 11) Eyeglasses which can be lift up in under-light environment, was connected with frame by rotating shaft 12) Unique mini 2in1 port for USB recharge, made it smaller and perfect 13) Capacity: 64MB to 1GB, dimensions: 170 x 160 x 38mm 14) Playing time: 4 to 5 hours, charging time: 2 to 3 hours Packing: Color box Other Price Terms: FOB Shenzhen Payment Terms: T/T, Western UnionSupply Ability: 5,000pcs/week