Philips Energy Saver Dusk-to-Dawn Compact Fluorescent Twister A19 Light Bulb: 900-Lumen, 2700-Kelvin, 14-Watt (60-Watt Equivalent), Medium Base CFL, Soft White ENERGY EFFICIENT: Philips Compact Fluorescent A19 Soft White Light Bulbs last 13X longer than 60 Watt Incandescent Bulbs while maintaining the look and feel of a classic light bulb. SOFT WHITE: Philips A19 light bulbs offer warm and comfortable lighting with high CRI (color rendering index). At 2700 Kelvin the bulbs deliver bright, crisp color ideal for use in enclosed post light fixtures. DUSK TO DAWN: Philips Compact Fluorescent A19 Light Bulbs are equipped with a built in light sensor that turns your light bulbs on automatically when the sun goes down and turns the light off when the sun rises. ECO FRIENDLY: Mercury free and lasts 13x longer than a standard incandescent bulbs. COMPATIBILITY: These Philips LED light bulbs fit in medium CFL bases. Not compatible with Philips HUE products. Philips Energy Saver Compact Fluorescent A19 Light Bulbs are for non connected use only.