50 watt IR 12 Volt Spot Sylvania Tungsten Halogen Tru-Aim MR16IR. Has a UV-Stop Capsule (greatly reduce any potential for fading of merchandise or decor) Bi-Pin Base. SYLVANIA IR halogen lamps feature a special infrared-reflective coating on their inner capsules that makes them up to 30 percent more energy efficient. One bulb per pack.