A21 bulb. 150w. 0.75 year life. Indoor. Dimmable. Hobby nook - illuminated! Study desk - enlightened! From reading rooms to craft corners, be brilliant with quality replacement bulbs from Simply Done. Operate in any position. Quality Guarantee: If you are not 100% satisfied, return our product for a full refund. www.besimplydone.com. Scan for more information. Made in China. Brightness Quantity: 2640 lumens. Energy Info: $18.07 based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 150 watts. Package Info: 1. Bulb Info: Indoor. Is Dimmable. Screw. Bulb Life: 0.7 years based on 3 hrs/day. Bulb Appearance: 2850 k.