This Dimmable 5W SMD LED GU10 from Crompton Lamps is a fantastic product that is both energy & cost efficient. A direct replacement for a 50W halogen GU10, this LED version consumes only 5W to produce 390 lumens of crisp cool white light (4000k), while the full glass body maintaining the same aesthetics of it's halogen counterpart. With a long 15, 000 hour lifespan, the Crompton Lamps GU10 is a long lasting, energy efficient replacement. Please note that that it is only suitable for indoor use. The Duo Dim™ Technology is compatible with both leading & trailing edge dimmers.15000 hour life Energy efficient Suitable for fire rated downlights For indoor use only Compatible with both leading & trailing edge dimmers 4000K cool light 10, 000 switching cycles GU10 Cap Beam angle of 35