Features: Perfect for energy conversion of the water into electrical energy mechanical equipment. Directly used to charge small battery, mobile phone, or power-supply for LED-lights. 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. Chin-iron-boron strong magnetism, using Chin-iron-boron strong magnetism, greatly improves the power generation capacity. Specifications: Material:Plastic Size:Approx.8.8x5.8cm/3.46x2.28inch Color:Black Peak-voltage: 80V Peak-current: ≥220mA (12V) Line resistance: 10.5 0.5 Ω Insulation resistance: 10m ω (DC 100 megohmmeter) Peak-pressure resistance of closed outlet: 0.6Mpa Starting water pressure: 0.05Mpa Axial-clearance: 0.2—1.0mm Mechanical noise: ≤55dB Unit quantity of generator: about 90g Generator life: ≥3000h Package Includes: 1x Micro-Hydro Generator(80V/12V/5V for option) note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.