---ENERGY SAVING: Replace (straight switch if you have GU10 fittings) 50W halogen bulb by 5.5W LED and save 89% on electricity bills ---WARM WHITE: 2700 Kelvin to create a comfortable, intimate environment. ---15 YEARS LAMP LIFE: 15,000 hours per bulb typically ---INSTANT ON: No warm up time, full light within 1 second ---Choose from Twin Pack, Pack of 6 or a Pack of 10.