This 4 pack of compact fluorescent bulb is Energy Star Approved and replaces a 60 watt incandescent bulb while using only 13 watts. These CFLs use up to 78 per cent less energy and lasts up to 10 times longer than standard incandescent bulbs. Specifications Estimated Yearly Energy Cost: 1.57 Life Hours: 10,000 Volts: 120V Color Temperature: 2700 MOL: 4.3 inch x 1.86 inch Equivalent: 60 Life: 9.1 years / 10,000 hours Base: Medium (E26) Energy Used: 13 Watts Lumens: 900 Features Uses up to 78 per cent less energy Saves 204 dollars in energy costs Usage: General Purpose Energy Star Approved RoHS Compliant Non-Dimmable