... driver-2800K to 5500K Colour Temperatures, CRI > 85-Direct Use in 12Vac/DC-ISO9001:2008 certificate manufacturer ... good heat sink.2. Constant current drivers3. No noise, no flickering4. No UV or IR radiation in the beam, ... mercury free5,High CRI more than Ra 85.6 ... ,100% import from japan,avoid giddy feeling,high quality guarantee.7,COB design, no ...