LED 功率 Power:50/60W 工作电压 Work voltage:AC(85V-265V)/(50-60Hz) 功率因素 Power fator(PF):>0.9 LED 效率 efficiency:80LM/W 光通量 Lumens: 4000lm 灯具效率 Fixture efficiency:>90% 发光角 View angle:50度 显色指数 Ra>80 色温Color temperature(CCT):2700~7000K 工作时间 LED life:>50000Hrs 净重 Net weight:3.3kgs 光衰 Luminance decrease:keep lighting 1000hours decrease %1 尺寸 size 290*236*183