The Sylvania 0028440 is a 5 Watt 345 Lumen 36 Degree Beam Dimmable GU10 LED Reflector Lamp that displays a 830 Warm White colour. SUitable for direct replacement to any old style halogen with either a GU10 or a GZ10 Lamp holder. The Sylvania refLED lamp range beats market standard by offering an exceptionally high power factor, making it extremely efficent in converting input power to output power. Reducing your energy consumption from 50 to 5 watts means savings of 90% of your energy costs. The 830 Warm White colour is mainly suitable for use in homes or business, providing a warm welcoming light.