Brightness Quality: 1280 Lumens. Energy Info: $8.67 Based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 72 Watts. 120 Volts. Package Info: 4 Bulb Info: Halogen Bulb Life: 1.8 Years Based on 3 hrs. Bulb Appearance: 2800 Kelvins. Misc: 100w replacement using 72w (The reduction of wattage from 100 W to 72W represents a 28% savings). A19. Longer lasting 2X (Lasts 2 times longer than standard A19 halogen bulbs). Energy savings 28% (Compare! Nearly as much light). Warm and comfortable light. Modified spectrum technology. These lamps comply with federal energy efficiency labeling requirements. A19 Halogen Doublelife: 72 watts, 1280 lumens. A19 Incandescent Doublelife: 100 watts, 1530 lumens. www.sylvania.com. Made in USA.