mophie juice pack case and rechargeable battery for iPhone 3G, 3G S Doubles the battery life of your iPhone 3G--get up to 6 additional hours of talk time (on 3G network) Charge and sync your iPhone 3G to iTunes without removing it from the Juice Pack Smart Battery Technology instructs the iPhone to always drain out the Juice Pack first Integrated LED status indicator lets you know exactly how much power is left Protective case with soft-touch rubberized finish, form-fitting design