Bayonet match base. 35 watt replacement 3.5. Last up to 10,000 hours. Dimmable. 120v. Brightness 350 lumens. Estimated Energy Cost: $0.42 per year. UL listed. www.feit.com. Made in China. Brightness Quality: 350 lumens. Energy Info: $0.42 Based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 3.5 watts. Package Info: 1. Bulb Info: LED. Indoor. Is Dimmable. Bayonet. Bulb Life: 9.1 years Based on 3 hrs/day Bulb Appearance: 3000 k.