... 12Vac input voltage 3, LED lumen: 560~580 Lumens 4, High CRI:>Ra 85 5,avoid giddy feeling Sharp ... mr16 bulbs Features:-Use SHARP 8W COB LED, no need use PCB-High LED efficiency of 560-580 ... good heat sink.2. Constant current drivers3. No noise, no flickering4. No UV or IR radiation in the beam, mercury ... Ra 85.6,100% import from japan,avoid giddy feeling,high quality guarantee.7,COB design, no need use ...