12 watts = 100 watts (Provides nearly the same light output as 100-watt incandescent bulb (1520 lumens vs. 1690 lumens)). Non-dimmable. Brightness: 1520 lumens. Estimated Energy Cost: $1.45 per year. Quality guaranteed or your money back. UL listed. Made in China. Brightness Quality: 1520 lumens. Energy Info: $1.45 Based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 12 watts. Bulb Info: LED. Screw. Bulb Life: 9.1 years Based on 3 hrs/day. Bulb Appearance: 2700 k.