Anyone who spends a lot of time outdoors knows that keeping your electronic devices charged up can be a challenge when you are away from an outlet. A new charging device has debuted that is hailed as the smallest hydropower plants in the world and it is called Blue Freedom.

The charging device uses a hydrodynamic turbine that spins when placed in flowing water and generates power. It also has an internal battery to store that power to be discharged later. Power from that internal battery can be used to top off your gadgets using USB cables.