Luxrite 105w Twist High Watt 6500k E39 Fluorescent Light Bulb 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, 105W, Base: E39 Mogul Screw, Color Temp: 6500K, Rated Life (hours):