These energy-efficient, Outdoor Floodlamp Bulbs use less power to produce the same amount of light as older, higher wattage bulbs. 150-watt, incandescent light bulb features a 130-volt design, & that means it will last longer & withstand surges much better than bulbs with a 120-volt design. Average life is 5,000 hours, emitting 1730 lumens.