Ltpgtdiscover corepro ledlamps the new entry philips range the led technology of these lamps achieves 80 energy savings they have a lifespan ranging between 15000 and are not dimmable the corepro ledlamps are fully interchangeable with incandescent or halogen lampsltpgt ltulgt ltligt135w 2700k warm white with lifetime of 15 000 hoursltligt ltligtcolour rendering index ra 80ltligt ltligtluminous efficacy rated nom 11267 lmwltligt ltligt