Westinghouse 0446300 20 Watt MR11 Halogen Low Voltage Narrow Flood GU4 Base Light Bulb Low Voltage, halogen, GU4, 20 watts, 12 volt Bulb life of 2,000 average rated hours Perfect for Pendant, track and recessed and landscape Lighting Fixtures and completely dimmable Estimated yearly energy cost: $2.41 (based on 3 hrs/day, 11/kwh. Costs depend on rates and use) Light appearance: 2950K