Led lgiht source,with more than 100lm/w led light source,perfect cooling system,almost 140 dgree of viewing angle. Technical parametersPower: 30/50/75/100/150wInput voltage: 85-265VPower factor: 98% Power efficiency: > 90% Luminous flux: 2400-12000lm Color Temperature: 3000-5500k Color-rendering index: > 80 Lighting efficiency: > 92% Operating temperature: -20 ~ 55 Life: > 50,000 hours Protection ...