Rock 2000 mAh Back Up External Battery Charger Case For iPhone 6  iPhone 6s 4.7 InchFeatures:2 In 1: external power + protective case.Slim and lightweight: portable to carry it with you.2000mAh Li battery: it provides extra battery life to your iPhone 6 and iPhone 6s、 which is equivalentto add 10+ hours use time.Protect your iPhone from scratches、 dirts and drops.Speacifications:          Brand       Rock           Model       RMP0317           Capacity       3.8V 2000mAh 7.6Wh           Material        Fireproof ABS+PC           Input       DC 5V\/1A           Output       DC 5V\/1A           Weight        67g           Drop test       1m           Compatibility       Apple iPhone 6 and iPhone 6s            Color       Red、 Pink、 Dark Blue   Package included:1 * charger caseMore details: