Philips Master LED spot GU10 delivers huge energy savings and minimises maintenance cost without any compromise on brightness. These are compatible with most existing fixtures with a GU10 holder and designed as a retrofit replacement alternative for 35W halogen lamps. 4W 4000K Cool White lamp with 25,000 hour average life Length 56mm / Diameter 50mm Dimmable with leading edge dimmers Up to 85% energy saving Retrofit Free of mercury and hazardous materials Ideal for spot lighting, corridors, lift lobbies, display cases and cabinets