... brightnessLuminaire EfficiencyHigh-efficiency low power consumption (80lm/w average)Mechanical BehaviorNo speckle, flickering, humming and buzzing, No delay start ... light:30-270W, nichia / cree /osram led chips, IP65, 85LM/W, vapor chamber thermal design, three years warranty, ... factory light:30-150W, nichia / cree /osram led chips, IP65, 85LM/W, vapor chamber thermal design, three years warranty, ...