The EcoSmart 3-way LED light bulbs are designed for use in 3-way lamps or on 3-way switches. These A19 LED bulbs are equipped with 3 various levels of brightness, which allow you to customize the lighting in your room to suit your current mood and needs. Each setting performs like a traditional 40, 60 or 100-Watt incandescent light bulb, but only uses 14.5-Watt of energy. The LED technology inside the bulbs will never overheat, meaning these bulbs are not only more energy efficient than traditional incandescent light bulbs but also safer. Furthermore, these bulbs are rated to last up to 15,000 hours of use so you won't be replacing them anytime soon. The Soft White (2700K) color temperature emitted by these bulbs is perfect for any of your indoor light fixtures in your bedroom, living room, office, and kitchen or anywhere you desire consistent beautiful light.