GU10 BASE 11 WATT JDR MR16 TYPE COMPACT FLUORESCENT BULB REPLACES A 35-50 WATT HALOGEN OR INCANDESCENT AND LASTS 10,000 HOURS WITH A FULL SPECTRUM 5000K COLOR TONE - * 25% less heat emission than standard spiral bulbs * 10,000 hour life rating * Tri Phosphor bulb coating to maintain consistent brightness levels throughout the life of the lamp * GU10 base provides positive electrical contact and consistent voltage level for energy efficient operation Innovative GU10 lighting technology allows any fixture with a GU10 socket to accept any light bulb wth a GU10 base connector. The benefit of GU10 technology means fixtures are not limited to the light source they were manufactured with. This versatility means the wattage, color, and style of bulb can be changed to any bulb with a similar GU10 base. Bulborama Supra Life GU10 base compact fluorescent bulbs feature two bayonets protruding from the base of the bulb. The GU10 bayonets insert into matching holes in a fixture's socket, then twist and lock into place. Supra Life compact fluorescent bulbs emit 25% less heat than standard spiral CFL's and last up to 10 times longer than standard incandescent light bulbs while using 75% less energy. Bulborama compact fluorescent light bulbs are an efficient way to light sockets once traditionally reserved for incandescents. Supra Life CFL's are lightweight, generate minimal heat, light instantly, provide excellent color rendition, and are available in low profile sizes to fit a wide variety of fixtures. With lifespans up to 36,000 hours, our compact fluorescents offer tremendous energy cost savings and years of maintenance free operation.