Knightsbridge 5W LED SMD GU10 Bulb Knightsbridge 5W Wide Beam GU10 Retrofit LED Light Bulb High Output LED Technology GU10 replacement bulb Ceramic body/heat sync ideal for heat dissipation and frosted glass lens GU10 5W Wide Beam SMD LED Lamp A* Energy Rated. Rated average hours life (subject to usage) 30,000hrs. 120 Degree beam angle. IP20 Rated. Extremly low heat output. GUSM5WW Colour Temperature: 2700K Colour Description: Warm White Lumens: 410 GUSM5CW Colour Temperature: 4000K Colour Description: Cool White Lumens: 450 GUSM5DL Colour Temperature: 6500K Colour Description: Daylight Lumens: 415 Comes complete with a 3 Year Manufacturer's Warranty. For the full specification click here - Warm White, Day Light & Cool White Tested in accordance with EN60968 – Self ballasted lamps for general lighting services. CE, EMC and ERP fully certified.