This 18 Watt Warm White Energy Saving Halogen Golfball Light Bulb is a perfect replacement for a standard incandescent lamp. The equivalent standard halogen wattage of this 18W lamp is 25 Watts. Offering a 2000 hour lamp life compared to the incandescent alternative. Energy saving halogen light bulbs emit the same bright white lights as standard halogen light bulbs but are 30% more energy efficient.