Windmill 1.400W, 600W, 1kW 2.Patented blade design 3.Innovative ... ring design 4.Best material and workmanship 400W, 600W, 1kW Windmill Technical Parameter TypeHY-400WLHY-600WLHY-1000WLRated Output400W 600W 1000W Peak ... /s gusting)Tower ConnectionFlange connectionWarranty (years)3 400W, 600W, 1kW Windmill