Specification: Condition: New Controller System: Electromagnetism Starting Wind Speed: 1.3m(12inch)/s Cut-in Wind Speed: 2.5m(98inch)/s Rated Wind Speed: 11m(433inch)/s The Instantaneous Maximum Wind Speed:? 45m(1772inch)/s Blades Quantity: 3 (with Different Colors) Diameter of Blades: 0.6m/24inch Blades Height: 0.8m/31inch Speed Regulation: Automatic Rated Power: 400W Max Power: 450W Generator Protection Grade: IP67 Work Environment Temperature: 25 to 45?