... :2700K-6500K WATTAGEBASELUMENSIZE40WE272400LM55*160MMB, COLOR E27 FULL SPIRAL SAVING ENERGY LAMP 1.High Luminous efficacy by using tri-phosphor 2 ... 4200K-cool white 6500K-daylight4.Average lifespan :8000Hours5.80% energy saving6.Optional Base :E14,B15,E27,E26,B227.Plastic ... and instant start C, COLOR E27 FULL SPIRAL SAVING ENERGY LAMP APPS:( House,Office,Restaurant,Classroom,Workshop,Factory,Shop ...