... .90lm/W luminous flux and 90% power factor 2.SMD 5630 as light sources, lighting is even without shade ... :40,000 HoursEqual to traditional tube:40W Product Features Adopts high brightness LED SMD5630 as light source, Aluminium PCB board, ... , saves 60% power consumption comparing with the fluorescent light, long lifespanReal replacement for the traditional T8 fluorescent light, easy installation, ...