... MORE THAN 50,000HOURSFeatures:low heat ,no UV or IR light radiationcolors:white(2700-6500k)base:E27color index:Ra75power factor:98 ... chromatism,long life span for over 40000hours .less than 6%light attenuation within 5,000hours running ,50,000hours lifespan .excellent heat ... as office ,factory ,shopping market,house and etc .The LED bulb lamp is the ideal lighting sources for the advertising board,the ...