Queen Light 3W LED Bulb Light is delicate, Aluminum Alloy heat sink ,with best quality of heat diassipating and widly applicabilition ,Queen Light source adopts imported LED chips.Super bright, high power, low consumption, high environmental protection. Bulit in constant driving power,(3W LED Bulb Light has past CE/ROHS /ULcertificate) stable function ,Life span ups to 50000H.