SYLVANIA 29378 - 11 Watt - CFL - 40 W Equal - 3000K Warm White - 82 CRI - 55 Lumens per Watt - 12 Month Warranty 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 SYLVANIA Mini Twist fluorescent bulb, 11W, Base: E26 Medium Screw, Color Temp: 3000K, Rated Life (hours):