120 V. Indoor/interior. Brightness: 300 lumens. Estimated energy cost: $4.82 per year. Lighting Facts Per Bulb: Brightness: 300 lumens. Estimated yearly energy cost based on 3hrs/day, 11 cents/kWh. Cost depends on rates and use: $4.82. Life: 1.4 years - based on 3 hrs/day. Light Appearance: 2850K. Energy Used: 40 watts. Made in USA.