Be an Enegry Star!! And lower your electric bills, without sacrificing the light you desire...with this amazing little 25 watt coil-style compact fluorescent lamp (CFL). At just 25 watts, it's brighter than a 100 watt incandescent bulb! And, with a rated life time of 10,000 hours, these CFL bulbs have the lifespan of 10 incandescent bulbs! And, unlike most manufacturers, the Buffalo Light company makes their glass by hand...they take pride in their dedication to high quality. Think of the money you will save! Screws easily into any standard lamp ballast. Note: Not for use with dimmers. Measures 6" from base to top (bulb itself is 3.5" long), with a width of 2.5". Be sure to buy one for every room in the house...great for cabins too! Made by the Buffalo light Company, in Signal Hill CA.Technical and boring details include: Input line voltage: 12VAC/6Hz, energy requirement: 25 watts. Light output: 1830 Lumens, efficacy >6LPW (Lumens per watt), rated lamp life: 10000 hours. Lamp type: coil, base type: screw-in E-26, dimensions: 5.71"L x 2.2"D, 3.7 oz. Color temperature: Warm White, color rendering index: >80. Transient-protected electronic ballast, CSA-listed, FCC compliance Part 18, Subject C, Class B; minimum starting temperature -18C/.F.