... 4.25000hrs,2.5years warranty t8 to t5 adapter with reflector Specification:14W, 21W, 28W, 35W1, Energy saving 45% than traditional ... from 90Lm/w to 110Lm/w , better brightness.7, With reflector, the light efficiency can increase 17%~20%8, Electronic ballast ... .5 years Power Factor0.99Optical Data :Light Color Warm White,Cool White,DaylightColor Temperature 2700k,3000k,4000k,6400kBeam Angle 45 ...