Brightness Quality: 425 Lumens. Energy Info: $3.37 Based on 3 hrs/day, 11 cents kWh. Cost depends on rates and use. 28 Watts. 120 Volts. Package Info: 2-Pack 2 Bulb Info: Halogen Bulb Life: 0.9 Years Based on 3 hrs/day. Bulb Appearance: 2850 Kelvins. Misc: Energy saving. Mercury free. Long lasting. 11 watts, 600 lumens = 28 watts, 425 lumens. These lamps comply with federal energy efficiency labeling requirements. Made in USA.