Portable power tool for iPhone, For iPhone 2G/3G3/GS 2100mahli-thium rechargeablebattery. 500times above charging cycle. Over charge and discharge protection design 4LED power indication Specifications: 1, Input voltage: DC 5V/0.5A 2, Output voltage: DC 5V/0.5A 3, Battery capacity: 2100mAh 4, Product size: L126 x W66 x T23mm 5, Product weight: 79.5g 6, Product color: Black and white 7, Apply for iPhone 2G/3G/3GS 8, Standby time: About 390hours. 9, Talking time, iPhone 3G about 6.5hours / iPhone 2G about 3.5 10, Internet surfing time: 3G about 6.5hours / Wi-Fi about 8hours 11, Music playing time: About 31hours Packing information 1. Gift packing size. 19.5*12*2.5CM 2, Packing weight: 153g. 3, Carton quantity: 90pcs per carton. 4, Carton size, 60*35.5*28.5cm, 5, Carton weight: GW, 14.55KG, NW, 13.55KG.