Satco S4496 - 40 Watt Halogen Light Bulb - T3 - DC Bayonet Base - Xenon/Krypton - Frost - 3,000 Life Hours - 560 Lumens - 120 Volt Satco - 40 watt; Halogen; T3; Frosted; 3000 Average rated Hours; 560 Lumens; DC Bay base; 120 volts