Rechargeable 1700mAh lithium ion polymer battery and protective case in one.</br>Up to 6 hours of talk time on 4G and LTE. Up to an additional 8 hours on 3G.  Up to 40 hours of additional audio playback.  Up to an additional 10 hours of video playback.</br>Soft touch finish - Sleek poly carbonate ABS materials in a sleek soft touch design.</br>Quick 1 amp recharging speed.</br>Made for iPhone Apple Certified.</br></br>Product Description</br></br>The Juice Pack Air is a thin rechargeable external battery concealed inside of a protective form-fitting case for the iPhone 5.  It offers the full protection of a hard shell case while providing double the charge.</br><br/>http://www.amazon.com/gp/product/B00QUN7TP0