LED color temperature simply is light -colored and well-being of the definition , the lower the color temperature of the light -colored warmer , colder the higher the temperature, light color , why, think of an iron bar , the more you put it burned hot , it 's just not from the dark - began to white Salmon - blue - purple shift , the color temperature is so defined . We usually use the color temperature of white light flashlight generally 5700K ~ 7000K, warm color temperature of the light flashlight generally about 4000K ~ 4500K. The previous halogen bulbs, color temperature seems to be around 2700K. It is loaded with the 8 LED, demonstrated the color temperature from 2700K ~ 7000K color temperature 2700K3000K3500K4000K4500K5000K6000K7000K order to distinguish between the various LED, CREE LED has a hierarchical system of per pcs LED light colors are classified into different levels , to facilitate user. Need Friends toy drum , CREE presentation box , inside CREE most products , comparison of various color temperature closer look at it. CREE LED into the cold white , natural white ( neutral white ) , warm white . Cool White interval is 10000K ~ 6350K, Natural White is 5700K ~ 4000K, warm white is 3700K ~ 2700K, warmer light color , the lower the brightness, which is now the technical decisions , so we usually use most or cool white and natural white . The number is the beginning of the cold white W, Natural White is 3-5 , warm white is 6-8 . Where WH and 3B are coincident , WJ and 3A is a coincidence that this is a natural white, cool white and the junction point WJ, 5D,, respectively, cold white, natural white, warm white warmest three files WA, 3C , 6B, cold white , natural white, warm white coldest three files , MCE is a 4-core LED, there are three files , this is the warmest J file MCE Color, that white is a white core , plus red , green, blue core is theoretically possible combinations of red, green and blue- white core , but only a single light each core presentation box , LED restrictions do not know or did not do another presentation box ultra-small 3-color LED estimated to be done with the lights , but you can three nuclear simultaneously lit, but it looks weird white synthetic , feeling a little dizzy rainbow color LED, mostly lights with SMD chip LED, interior lights do good, much better than those now made ​​the final to a Big Mac , MPL, good interior lighting