50/100/150 watt 3-way incandescent lamp. A21 bulb. 3C medium base. Length 5.25”. Approximate life 1,200 hours. Lamp description 50/150/RVL-1/12PQ. The light bulb that uncovers pure, true light. Filters out dull yellow rays. Makes any room look better. Reds become redder, greens become greener, and oranges become orangier. Bluish finish.