High-power dimmable LED frosted opal thermal plastic candle bulb. These top-quality bulbs utilise the latest in LED lighting technology. They are not only ultra-energy-saving (only 5w), but they give approximately equivalent light output to 40w standard bulbs! These LED bulbs are manufactured to the highest possible standards, with 400 lumens. The bulbs are a low-cost item to run using only 4 watts of power and have a 20,000-hour lifetime rating, which will save you a substantial amount of money over that duration. Due to the high-quality LED chips used, the colour 3000k (warm white) will never differ or gradually fade.