LED 功率 Power:50W 工作電壓 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 燈具效率 Fixture efficiency:>90% 發光角 View angle:100&50度 顯色指數 Ra>80 色溫Color temperature(CCT):2700~7000K 工作時間 LED life:>50000Hrs 凈重 Net weight:3.3kgs 光衰 Luminance decrease:keep lighting 1000hours decrease %1 尺寸 size 290*236*183