Luxrite LR22300 CF13 13-Watt CFL T2 Spiral Bulb, Equivalent To 60W Incandescent, Warm White 2700K, 900 Lumens, GU24 Bi-Pin Base, 1-Pack Fluorescent bulbs are energy saving bulbs and last up to 10 times longer than incandescent bulbs Fluorescent bulbs help you save money using 40 - 70% less energy than incandescent bulbs Fluorescent bulbs are 5-8 times more brighter (more output lumens /watt) than incandescent bulbs Luxrite Twist fluorescent bulb, 13W, Base: GU24, Color Temp: 2700K, Rated Life (hours): 10000