For iPhone 4 Battery back splint Battery,External Battery for iPhone 4 Charger

This External Power Battery Pack Air and in tegrated case for iPhone 4 4s is an ideal and powerful companion for your endearediPhone4. It acts both as a protective case and also as an excellent external battery pack. The potent built-in 1500 mAh Lithium-ion Polymer battery can be engaged using the On/Off switch button at your will and it is able to provide additional talk time by up to 6~7 hours for your iPhone4 and stand time by 5 days. This case is stylish and portable with textured Black non-slip finish: 2 in 1 battery & Docking as well as provides full body coverage for your iPhone4

Features:

    Smart Battery (Optimized to lengthen your iPhone performance time; No more out of power dilemma during important phone

coversations)
    Full Body Coverage for iPhone4
    Lightweight, thin design (Low profile)
    Non slip comfort grip
    USB charging and SYNC without the need to disconnect your iPhone4 from the case
    Automatic tests function
    Data transmission    
    High-quality Li-polymer Cell
    Extended battery pack - 1500 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)
    Sleek, Low-Profile design ; Rechargeable up to 1000 times

Specification:

    Fully charged in 3 Hours
    Battery type: Lithium-ion polymer battery (Way better than Lithium-ion batteries).
    Output voltage: DC 5V
    Output current:  1500 mh
    Input: 5v 1000mA
    Output: 5V
    Weight: 3.2 oz
    OEM Version/Retail Gift Box Package,iPhone4 USB Cable included.
     Please make sure to charge your battery case for at least 8 Hours before first use to achieve maximum performance

Compatible:

    For iPhone 4 4s