You can find a variety of smartphone power cases on the market today, but they all require either a wall plug, or to be placed in direct sunlight for a half of day. The Ampware Hand Crank Case ($79) is different. It only needs some good ol’ fashion elbow grease.
Containing an on-board slim generator and a hand crank that folds out, the case is able to charge your phone when the handle is turned. With only 5 minutes of cranking you’ll get up to 1 hour of battery life for normal use, or 5 hours in standby mode. The handy gadget weights in at 3.5 oz (100gr), has a thickness of just 0.7 inches (18.5mm), and features a bumper that offers drop protection. Available for the iPhone 6/6s, the Ampware case arrives in three models: Shadow (black), Sport (electric green), and Ranger (camouflage green.)