1,Energy Saving Lamp 2,Best quality. up to 10000 hous lifespan. 3,UL, CUL, FCC, CE, ... 240VFrequency: 50/60HzAverage lifetime: 6000hrs/8000 hrs/10000hrs availableOptional base: E27/B22/E14Optional Color Temperature: 2,700K-6,500KApplications:Shopping malls ... , hospital etc.Certification: Energy Star, UL, CUL, FCC, CE, SAA High Quality Energy saving lamp E27 9w