Output characteristics: output voltage without the voltage regulator circuit is-proportional to the water pressure Enlarge the-vortex impeller to greatly improve the power generation efficiency, and at the same-time add bearings to reduce wear Directly used to small battery,, or power-supply for LED-lights Perfect for energy conversion of the water into electrical energy mechanical equipment Chin-iron-boron strong magnetism, using Chin-iron-boron strong magnetism, greatly improves the power generation capacity, Manufacturer: THOANBY