... not cause eye fatique. It's trully environmental friendly "Green Lighting" 4.Full Color Temperature:2700K ~ 6500K red, green, blue, yellow ... time≤ 0.5 seconds, no need to preheat, instant start lighting can be.8.The Color Is Good, color rendering index ... , airports, railway, stations, playgrounds,exhibition halls, supermarkets, and other indoor public places, lighting.