External Battery for iphone

ity · Smart Battery (Optimized to lengthen your iPhone performance time; No more out of power dilemma during important phone coversations) · Lightweight, thin design (Low profile) · Non slip comfort grip · USB charging and SYNC without the need to disconnect your iPhone from the case · Automatic tests function · Data transmission · High-quality Li-polymer Cell · Extended battery pack - 1900 mAh · ON/OFF Button for Optional Power Output Control · Four LED lights indicates the power level remaining the case (Each light represents 25% of remaining power) · Rechargeable up to 1000 times - Charges through USB to micro USB 5-pin cable · Standby Time: Up to 6 hours Specifications : · Fully charged in 3 Hours · Battery type: Lithium-ion polymer battery (Way better than Lithium-ion batteries) · Output voltage: DC 5V · Output current: 1900mah · Input: 5v 500mA · Output: 5V · Weight: 65g · USB to micro USB Cable included · Please make sure to charge your battery case for at least 8 Hours before first use to achieve maximum performance