Daylight 13 watt Replacement Tube Bulb - This 13w tube bulb is specially made to simulate daylight, allowing for exact color matching. Equivalent to a 75w tungsten bulb. Easier on they eyes than regular bulbs. These are also cooler and emit less heat than regular light bulbs. Uses up to 80% less electricity than standard bulbs! It is 5-1/2 inches long and will fit into the Daylight Compact Lights.