... downlight design. 3,LED lumen (5500K): 2300 Lumens Features:-Use SHARP COB led. -High LED efficiency of 85 lumens / watt -Efficient ... -Applications include: office/home lighting/Hotel--------------------------------------------------------------------Why it's SHARP LED1,Use ceramic base, very good heat sink.2, ... ,100% import from japan,high quality guarantee.5,COB design, no need use PCB, long life span ...