... :MORE THAN 50,000HOURSFeatures:low heat ,no UV or IR light radiationcolors:white(2700-6500k)base:E27color index:Ra75power factor:98 ... other assessories ,no chromatism,long life span for over 40000hours .less than 6%light attenuation within 5,000hours running ,50,000hours ... .the outlook of the wall of building ,the lighting project for the resorts ,the decoration of stage ,home decoration ,coffee ...