Westinghouse 0474800 20 Watt MR11 Halogen Low Voltage Spot Clear Lens Light Bulb with GU4 Base Low Voltage, clear lens, halogen, GU4 base, 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: 2800K