Mophie Juice Pack Air for Iphone 5/5s (1,700mah) - Red (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty This phone case works as a rechargeable 1700mAh lithium ion polymer battery and protective case in one great item The Mophie Juice pack offers power of 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. Elegant ad sleek soft touch finish - Sleek poly carbonate ABS materials in a sleek soft touch design. Quick recharging speed of 1 amp