Brightness Quality: 580 Lumens. Energy Info: 1.20 Based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 10 Watts. Has Energy Star Logo Is Energy Smart Package Info: 1 Bulb Info: CFL Bulb Life: 11.0 Years Based on 3 hrs/day. Misc: 1 soft white instant on general purpose CFL bulb. 40W replacement. Uses only 10W. A smart way to save energy. 11 year life (Based on 3 hours use per day). Cozy, relaxing light. $39 energy savings per bulb (Electricity cost savings based on using the bulb for 12,000 hour rated life at 11 cents per kilowatt hour compared to twelve 40 watt soft white incandescent bulbs [rated life 1000 hours]. Provides more light output [580 lumens vs 490 lumens]. Reliable starting from 5 degrees F [-15 degrees C]). Smaller size mini spiral fits more fixtures. Non-dimmable. UL listed. Self-ballasted lamp. Limited Warranty: guaranteed to last 6 years based on rated life at 3 hours consumer use per day at 120V. Details on the inside of this package. Visit us on the internet at www.GELighting.com. 800-GE-Light. Made in China.