With a lifespan of 15,000 hours, the bulb will work for over 13 years (based on 3 hours of use per day) Provides 470 lumens of light immediately, with no warm-up time to reach its maximum lighting level With a color temperature of 2,700 kelvin, the bulb provides warm white light, creating a welcoming atmosphere in any room.< /p> Consuming 5 Watts of energy and costing only 1.02 per year to use, this bulb saves up to 86% per year and 87.98 over its lifespan compared to a equivalent incandescent bulb (based on 3 hours of use per day, 0.17/kWh; may vary depending on prices and usage) The excellent color rendering index ( CRI &gt; 80) provides bright, natural color; 270 degree beam angle for wide illumination Non-dimmable bulb, not dimmable