Halogen light bulbs are a type of incandescent light that are more energy-efficient and longer lasting. Unlike traditional incandescent bulbs, halogen lights can be used in specialized appliances and tools, such as projectors, and can burn longer and hotter than their counterparts. They are typically used in landscape lighting, for retail, show cases, and for food service.Satco’s model S4750 light bulb uses 125W of power, with a brightness of lumens. It fits a Medium (E26) base, and produces an infrared light. With typical use, it lasts about 5000 hours on average before requiring a replacement. This product is sold in multiples of 12.