... mr16 bulbs Features:-Use SHARP 8W COB LED, no need use PCB-High LED efficiency of 560-580 ... very good heat sink.2. Constant current drivers3. No noise, no flickering4. No UV or IR radiation in the beam, mercury free5, ... avoid giddy feeling,high quality guarantee.7,COB design, no need use PCB, long life span.8.Whole ... . Home lighting, hotel,supermarket,mall,jewelry shop- no giddy feeling sharp spotlight