16 W A21 Medium base soft white warm glow dimmable led light bulb. Energy efficient replacement for 100 W incandescent A21 household bulb. Medium base (E26). Long life, lasts up to 25000 hours or 22.8 years when used 3 hours per day, 7 days a week. Ideal for table and floor lamps. Designed in traditional bulb shape, fits easily into existing fixtures.