... no Radiation 4. High-tech COB LED Light, COB Downlight, ultra bright, good heat conductive High Quality Detailed Product Description1.90 ... ) unique optical design, no light pollution, glare-free, uniform light field, no strobe3) above 85% lamp efficiency4) above 80% power efficiency ... 70% compared to fluorescent lights. , COB LED Light, COB Downlight, ultra bright, good heat conductive