12 volt. Brightness: 700 lumens. Estimated Energy Cost: $6.02 per year. Lighting Facts per Bulb: Brightness: 700 lumens. Estimated Yearly Energy Cost: $6.02 (based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use). Life: 1.8 years (based on 3 hrs/day). Energy Used: 50 watts. Light Appearance: 3000 K. Made in China.