1 A21 bulb. 100 watt replacement uses 17.5 w. Vivid natural light. Bright white - 3000k. Brightness: 1600 lumens. 1 A21 bulb. Lasts up to 22 years (Life: 22.8 years (Based on 3 hrs/day)). Dimmable. Estimated Energy Cost: $2.11 per year. The performance specifications (lumens, watts, life, CCT, and CRI) printed on this product package should only be considered an approximation of expected performance. Enhance: 90+ color rendering index (CRI) bulbs allow colors to appear more realistic and vibrant. Omni directional all around light distribution. Uses 83% less energy (83% energy usage reduction is estimated based on the rated performance specifications for this LED bulb instead of a 100 watt incandescent bulb. Energy usage reduction will depend on actual use). Suitable for use in enclosed fixtures. Mercury free. LED Efficiency: 17.5 Watts LED: 25,000 hours = 100 Watts Incandescent: 1,000 hours. Can be used to comply with 2016 Title 24 Part 6 high efficiency LED light source requirements. Meets CEC title 20 light bulb standards. UL listed. www.feit.com. Made in China. Brightness Quality: 1600 lumens. Energy Info: $2.11 based on 3 hrs/day, 11 cents/kWh. Costs depends on rates and use. 17.5 watts. Has Energy Star Logo. Package Info: 1. Bulb Info: LED. Is Dimmable. Screw. Bulb Life: 22.8 years based on 3 hrs/day. Bulb Appearance: 3000 k.