... Saving fluorescent Light1) Same working wattage,more brighter than others. 2) Lifespan : 15.000hours, 20.000hours, 30.000hours 3) PF ... gives 2 times longer lifetime for adaptor7) Voltage optional: 110v ,120v, 220v ,230v , 240v , 277v, and 347v 8) Electronic ballast provide ... /T5 adapter212230.026Electricity saving quantity(KW/h)0.019 High quality T5 adapter energy saving electronic fluorescent lamp