Philips F15 LED light bulbs with Warm Glow Effect provide 500 lumens of soft white light, equivalent to 60-Watt incandescents with 80% less energy use. These bulbs fit standard medium base (E26) fixtures with the look and feel of a classic bulb. Warm Glow dimming offers flicker-free, silent dimming that works with more dimmer switches than any other LED on the market. The more you dim, the warmer the light–from 2700- to 2200-kelvin just like traditional incandescent light bulbs. These best-in-class, Energy Star Certified Philips LEDs provide steady, natural lighting at 1/4 of the energy of incandescents, 1/2 the energy of halogens and with 10X and 4X the lifespan respectively. Philips LEDs are mercury-free so they don’t contribute to harmful hazardous waste. With a medium (E26) standard base, these decorative bulbs can be used in any standard indoor lighting fixture and in humid areas. Use these decorative bulbs in exposed fixtures, hanging and pendant lamps, and string light fixtures where steady ambient mood lighting is desired. Not for use with Philips Hue products. This 4-pack of F15 LEDs is expected to deliver a lifetime of up to 25,000 hours and over 20 years based on standard usage of three hours per day, saving you the cost and hassle of frequent bulb replacement. Not recommended for outdoor use.