1) support various audio frequency format Repeat downloading music, support MP3/WMA/WMV/ASF and other music format etc. 2) U-disk Portable USB2.0 storage disk: No driver need above WIN98 system. 3) Top-class lens Top-class sunglasses lens, Polaroid lens, optical lens for your choosing, resist ultraviolet radiation and plated film. 4) Battery Rechargeable 3.7V polymer battery, play MP3 for 4 hours continually. 5) Power saving Automatic power off when it finish playing MP3 or it is in the stand by for 30 seconds. 6) Led light Indicate different states. Accessories: Users' manual, USB wire, Charger(additional), Car charger(additional),Transmitter(additional) MOQ: 96 sets (8 dozen/ 2 carton) Packing and weight: 1 set/giftbox(8.5*8.5*17cm/0.28kgs) 12 sets/box(28*36.5*19cm/3.80kgs) 48 sets/carton(41*39*58.5cm/16.00kgs) 15000 sets/20" container Payment terms: T/T 30% as deposit in advance, the balance paid before the shipment. Delivery Date : 15 days after received the deposit.