Key Features Quality Material: It is made of quality aluminum alloy, which is scratch-resistant, wear-resistant, firm and durable, ensuring a long service life. Pure Copper Coil: The pure copper coil has better electrical conductivity and lower resistance, making for better power generation. Easy to Carry: This micro-hydroelectric generator is compact(3.9*7.87in) and lightweight(5.5lbs), making it very portable. High Efficiency: The high power(500w) and high water flow rate(0.5gal/s) of this mini-hydro generator ensure high power generation efficiency. Energy Saving: It is environmentally friendly, recyclable, without electricity consumption and saves energy by using pure natural water power to generate electricity. Highly Versatile: This micro-hydroelectric generator only requires a vertical drop of 16.4-49.21ft, so the water flow in the mountains can meet the power generation needs on a regular basis, which is very practical. Easy to Use: All you need to do is find the right place, connect the outlet and inlet pipes, and then you can use it immediately, which is very convenient and energy-saving. Details Waterproof  Seal: This product is equipped with a waterproof rubber seal that prevents water from backing up into the generator and bearings, providing great safety and extending its life. Practical Bearing: The impeller outlet is fitted with a bearing to stabilise the rotation of the impeller, which makes the product less likely to rock and tip over. Specification Color: Silver Material: Aluminum Alloy Power: 500w Voltage: 110V Water Flow Rate: 2L/s (0.5gal/s) Vertical Drop: 5-15m/16.4-49.21ft Inner Diameter: 50mm/1.97in Gross Weight: 2.8kg/6.17lbs Net Weight: 2.5kg/5.5lbs Product Size: 10*20cm/3.9*7.87in Package Size: 23*13*16cm/9*5.11*6.29in Package Included 1*Micro Hydroelectric Generator; All Accessories for Use Notes Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering. We aim to provide quality products and services, if you have any problems, please feel free to contact us, we will reply and solve the problem for you as soon as possible.