When you aren’t near an AC outlet and don’t have time for solar charging you might worry that your smartphone can’t go the distance. The Mophie Juice Pack Pro Outdoor Edition will ensure that the iPhone 4/4S can remain powered up while on the go. This case helps extend the battery life while protecting the handset. It offers rain and splash, as well as sand and dust protection, and features an impact resistant design that exceeds military specifications (MIL-STD 810G). More importantly it offers a large battery along with a belt clip so you’ll have the device handy and ready to use.