Charge your smartphone using your body Temperature!

Korean developed Thermobattery lets you charge up your phone and other accessories using body heat.

Researchers at Korean Advanced Institute of Science and Technology (KAIST) header by professor Biyung Jin Cho have created this flexible battery charger which is small enough to be worn on your wrist like a watch.

The device produces power due to temperature difference between the air and the body. It has been created by using a fabric material and will also be used for charging up medical sensors.