Product details: Item:65 watt spiral energy saving lamps Power: 65 watt Base: E14,E27,B22 Tube Dia.: 18mm Lumen: 3575lm Product features: 1 Futlite HF electronic ballast inside, instant start and low temperature rise, providing a flicker-free & noise-free working environment 2 Wide voltage range circuit withstands frequent voltage fluctuation, and plastic dip coating process makes the lamp also suitable in moist environment 3 Up to 80% energy saving than standard incandescent bulbs, and long life span up to 8000hrs 4 The lamp base is made of PBT , a flame-retardant material withstanding high temperature, high pressure and fadeproof. 5 Flicker free starting operation and universal burning position 6 Color temperation options: warm white, cool white and day light 7 Operation voltage: 220-240v/50Hz, 110-130v/60Hz 8 High light output and excellent color rendering 9 Compact size fits many small fixtures 10 Optimum configuration design for thermal diffusion,which can increase life expectancy prominently