These Energizer LED GLS Bulbs offering an 85% energy saving versus normal bulb. The bulbs are a true retrofit design, provide instant, flicker-free light and have an average rated life of 15,000 hours. This Energizer LED R50 Reflector GLS Bulb has the following specification: Fitting: E14 (SES) Input Wattage: 4 W (40 W equivalent) Lumens of Light: 450 lm Colour Temperature: 2700 K (Warm White) Lamp Dimensions: 85 X 50 X 50 mm Dimmable: Non-Dimmable Rated: E Switching Cycles: 40,000 Average Rated Life: 15,000 hours