... .Aluminum alloy casi For Iphone 4000mah A quality polymer Battery portable power bank Features1).Rechargeable up to 1000 times2).Long life battery : >70 ... , over-current,over-charging and over-discharging 6).Compatible with Mobile IPhone Specifications1. Cell type: Li-Polymer battery2. Output capacity: ... Black,Golden,Blue,Pink,Silver,Red,green or customizedAccessories:1X power station, 1X user manual,