Prepare for emergencies with an iPhone case powered by kinetic energy. Crank the back handle for one minute to produce enough power for about a two-minute call. A must-have for outdoorsy iPhone users, ones who drive, and ones with a heartbeat.
Prepare for emergencies with an iPhone case powered by kinetic energy. Crank the back handle for one minute to produce enough power for about a two-minute call. A must-have for outdoorsy iPhone users, ones who drive, and ones with a heartbeat.