... and Ipad,other mobile phone External battery case for smart phonesExternal battery charger for Iphone 4SProvides 360° protection ... Input voltage: 5.0V DC/1.0A Output voltage: 5.0V DC/0.5A Working temperatures ... anti-overload3)Compose Type : Injection Technology to make battery more stable4)Certifications : CE,,FCC, RoHS,ISO90015 ... ) Light weight, small size External battery case for smart phones