... .Voltage:110-130v,220-240v 3.Power:5W,9W 4.Lamp base:E26,E27 Energy saving lamp1.2U energy saving lamp2.Voltage ... :110-130v,220-240v3.Power:5W,9W4.Lamp base:E26,E275.Material:aluminum,copper,iron5. Life time of light :3000-8000 hours6 ... requirment,can work steadily under different temperature. 2U energy saving lamp