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 6500k daylight colour temperature means that this lamp produces a bright ice white colour with a tint of blue, which the 100° wide beam angle ensures the light is spread widely across the area of direction perfect for retail or display area. 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 521.221