Air X Wind Generator, Wind Turbine has a peak output of 400 watts at 28 mph (12.5 m/s) wind speed and is suitable for locations where wind speeds reach up to 100 mph. Carbon reinforced blades and a microprocessor based speed control result in quieter operation and improved battery charging. This is a corrosion proofed version of the Air X Land designed for coastal and nautical applications. A white powder coated housing and sealed electronics prevent damage from salt spray. The weight is seventeen pounds. Comes with a three year manufacturers warranty.