... Technical paramters:Wattage : 36wInput voltage: 85~130v/185 ~ 240vFrequency: 50/60HzLumens : 2340±20LmCRI : >0.9Color temperature : 2700k/4000k/ ... 6500kWorking temperature : 0°C- 65°CLifespan : 50,000hoursProduct features:- Used the CCFL high brightness lighting sources,can ... time lighting,like office,factory,school,markets.etc- 50,000hours long lifespan,if you using 8 hours every ...