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 Opal GLS Bulb has the following specification: Fitting: E27 (ES) Input Wattage: 13.5 W (100 W equivalent) Lumens of Light: 1521 lm Colour Temperature: 2700 K (Warm White) Lamp Dimensions: 122 X 60 X 60 mm Dimmable: Non-Dimmable Rated: E Switching Cycles: 40,000 Average Rated Life: 15,000 hours