... 3% in the frist 1000hours 5. Lumen: 270lm(6000k) 6. Light color: Warm white<2500K-3500K>; Neutral white: <3500K-5, 000K>; Cool ... 000 hoursRelevant Certificate CE, RoHS,Warranty 2 years Optical Data :Light Color Warm White, Neutral White, Cool White,R,G,B, ... the new and old customers from home and abroad with high efficiency, good quality and reasonable price. Our principle is professional, dedicated, ...