Definity DFN 16 WW V2 NFL LED Energy Star High Output Light Bulb, 8-watt, 25-Degree Beam, 12-volt, Warm White Energy-saving replacement for 50 watt Halogen light bulbs with estimated energy cost of 0.96 per year (based on 3 hrs/day, 11/kWh) Dimmable & perfect for use in track down lighting or accent lighting Superior design requires no fans to optimize thermal dissipation Provides 525 lumens of warm white light at 3000K Low 12volt lighting product, generates less heat and lasts 8X longer than halogens