1.Energy saving rate>70% 2.Durable and reliable LED (NICHIA) and Drivers (MEANWELL), 3.providing 5 year warranty/50000 operating hours 4.High efficiency with up to 110lm/w,CRI>83 5.Equipped with narrow beam angle lens (50-90),doubled the centre lux! 6.Weight is only 1/2 of common LED high bay,save in delivery cost. 7.CE(Europe),CB(international),UL(North America)and RoHs 8.Environmental friendly:without mercury,ultraviolet(UV)and infra-red light