This Classic Candle bulb range offers up to 30% Energy Saving over the 2000 hrs average bulb life compared to standard Halogen Candle bulbs. General Benefits of Eco-Halogens: Saves 30% in energy and electricity costs compared to standard incandescent bulbs Like for like in size Fully Dimmable Instant Start Up 2000 hours average rated life. Lasts longer  compared to standard incandescent bulbs Brilliant sparkling white light with a colour rendering index (CRI) of 100 No mercury or other hazardous materials ES (Edison Screw / E22)