Free your worry about the phone lack of power in the way to travel! We strongly recommend you this mp3 charger. This multifunction 6600mAh high-capacity power bank mps Charger is made of lithium-polymer, the equivalent of 5-6 blocks of cell phone batteries. This portable battery charger can make sure cell phone standby for 30 days, to eliminate your concerns about lack of power in business travel. Its cycle can be repeated more than 1000 times. It can be used for iPad/iPhone or the Samsung P1000, as well as mobile phones, MP3, MP4, GPS and other digital products. It can charge to the two USB devices at the same time. Strong compatibility, meet all major smart phones to the market charge. Exquisite design, the mini charger is made of high quality ABS material. The mp3 charger comes with powerful smart charge and discharge detection, intelligent protection function which are over-charge, over discharge, overload, short circuit, such as protection against lightning.