EcoSmart 60W Equivalent Daylight Spiral Dimmable CFL Light Bulb (E)* (2-Pack) The EcoSmart 14-Watt (60W) Household CFL Light Bulbs (2-Pack) (E)* use approximately 75% less energy than 60-watt incandescent bulbs and can last up to 10 times longer. These dimmable, soft-white bulbs can be used in interior or exterior enclosed lighting applications. (E)* means this bulb meets Federal minimum efficiency standards. Lighting application: Indoor/Outdoor Enclosed; Ideal for use in table lamps, sconces, ceiling mount fixtures and other general lighting applications with dimming applications Life Hours: 9.1 Years Estimated Yearly Energy Cost: $1.69 (Based on 3 hrs/day, 11/kWh. Costs depend on rates and use.)