Philips El/dt42w Decorative Twister 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 Philips Twist fluorescent bulb, 42W, Base: E26 Medium Screw, Color Temp: 2780K, Rated Life (hours):