Going hiking this summer and nervous about getting lost? Pack the Mophie Juice Pack plus Outdoor. The Juice Pack envelops your iPhone 4/4S in a protective case and includes a rechargeable battery, so your iPhone won’t get damaged or die on the trail. Its “track” feature lets you monitor your speed and distance and tag photos along the way. And if you’re not sure where to take a hike, the search feature accesses more than 1 million outdoor points of interest across the country.