Bone Power 5200 mAh Battery5200mAh portable battery charger provides 2 full charges to a smartphone.Automatic hibernate feature to save power.4-LED indicators to show remaining power and charging status.Overcharging, over discharging and over-temperature circuit protection.Perfect companion for your iPhone/ Android smartphone/ iPod/ PDA/ MP3/ MP4/ PSP/ GPS.One-year warranty.SpecificationsMobile Power Battery Mode: Samsung CellMobile Power Battery Capacity: 5200mAhInput: DC 5V/1AOutput: DC 5V/1AInput Charging Time: 2~3 hourOutput Charging Speed: 1000mAh / hourCycle Life: ? 500 timesCertification: RoHS, FCC, CE Authentic piece from the Bone CollectionThis is a genuine piece from the Bone Collection company with a manufacturing warranty. Please beware of counterfeit fake copies. The counterfeits are much lower in quality and most importantly do NOT come in the original packaging and do not come with a warranty from the manufacturer Bone Collection.