This Primalux LED GU10 is 5.5w, meaning it is the perfect replacement for a standard 50w Halogen GU10 or an 11w CFL lamp. It has a lumen output of 400 lumens. The 3000k colour temperature means that this lamp produces a warm and comfortable glow, which the 100° wide beam angle ensures the light is spread widely across the area of direction. This lamp, being LED, results in 90% savings in energy when compared to the equivalent halogen GU10. This lamp is non-dimmable. Energy Rating A+ Primalux 521.218