Fast Starting 13 Watt Bulb - 800 Lumens Pleasing, Soft White Light - Color Temperature 2700K Fits GX23 Household Sockets - Lasts 10,000 Hours Can Last Over 7 Years - Burns Cooler Than Incandescent Creates The Light Of A 60 Watt Incandescent Light Bulb Replace your incandescent bulbs with CFL bulbs. It's one of the easiest things you can do that will have the biggest energy impact. These CFL's use up to 75% less energy than standard incandescent bulbs and last up to 10 times longer. Incandescent bulbs are very inefficient, 90% of the energy used by incandescent bulbs turns into heat, only 10% of the energy is converted to light. Save energy and money with this convenient 4 pack