Lumen efficiency up to 160lm/W Cold-forging aluminum heatsink for lighter weight and better thermal management, 600W only 17kg. Mutiple installations designed as high bay for warehouse, airport, as flood light for sports area, stadiums, etc. Various beam angles, such as 120°, 30°,60°,90°, 15°,20x60°.Visor mounted to control trespass of light.