Power: 50W Rotor diameter: 700mm Height of blades: 600m Material of blades: Glass Fiber Reinforced Plastic Number of blades: 5 Rated rotor speed: 120r/min Rated wind speed: 7-10m/s Start-up wind speed: 1.3m/s Work wind speed: 1.3-25m/s Survival wind speed: 50m/s Output voltage: AC12V Packing size: 660, 350, 280mm Weight: 15KG.