Designers have invented a wind-up case which means your mobile phone will never run out of battery. The Ampware CrankCase has a pop out handle which can is used to physically recharge a phone's battery when you are out and about.
The more you crank the handle, the more power your device has. Just one minute of turning the handle will charge a smartphone for 40 minutes or a tablet for 20 minutes. SEE OUR COPY FOR DETAILS.