This 60-watt equivalent Energy Saver Dusk-to-Dawn Compact Fluorescent Twister features a built-in sensor automatically senses sunlight, turning the light on at night and off in the morning for you. Designed for use in open, outdoor fixtures, this 2700-Kelvin bulb illuminates with a clear, bright, soft white glow. Features a Medium Base CFL base. Replaces 60-watt incandescent A19 bulbs, and offers a lifespan of at least seven years. Versatile for multiple applications, this bulb has a classic design, and is ideal for use in enclosed post light fixtures. This energy-saving bulb lasts up to 13 times longer than a standard incandescent bulb. This product ships as a single bulb and comes with a 2-year warranty.