... 80% 3.50000hrs 4.CE&ROHS 3w ceiling light led Feature:1 Nice and simple design, it ... interference, no buzzing noise, no flash,the light give us a soft feeling 7 Environment protection: no UV ... can use nearly 20 years if 8 hour a day.9 Maintenance free, low power consumption, ... 2 years warranty, CE,ROHS&FCC approval3w ceiling light led application:home&office lighting, living room lightingmeeting room, ...