... lm/W(clear/transparent/stripe cover)2.High power factor of 0.953.Isolated driver power,use the best quality Japan Rubycon capatitor ... fordriver power.4.Input voltage:AC100-240V,AC85-277V, ... 277V AC, Working voltage:DC36-42V3.Working frequency: 50/60HZ4.Power supply: Internal or external5. Lifespan: 50,000 hours LED ...