Main Feature:Color:White Keep your iPhone/iPod playing by letting you power your device even when your internal battery is drained. Great solution for long flights， hikes， or for anytime you don't have access to an AC outlet. The backup battery is charged with the iPhone data (sync) cable. Charge time of the backup battery: around 2 hours. Give your iPhone up to 24 hours of extra standby time (depends on you usages). 4 LED capacity indicator. Battery type: lithium-ion batterty. Input: 5.5V 500mA. Output: 5V 800mA. Capacity:1900mAh.Specification:weight:90 g size:14.7*8.7*2.5 cmPackage: 1 x Portable 1900mAh Mobile Charger for iPhone 4G