... 4. High-tech COB LED Light, COB Downlight, ultra bright, good heat conductive High Quality Detailed Product Description1 ... index greater than 90, good color performance, close to natural light6) 3000K-7000K wide range color temperature7) isolated ... rate compared to conventional tungsten incandescent lamps, more than 70% compared to fluorescent lights. , COB LED Light, COB Downlight, ultra bright, ...