A halogen G9 capsule lamp is a high-intensity light source offering excellent light output at a very affordable cost. This two-pin, compact tungsten halogen light bulb features a clear or frosted finish and emits a warm white 2700k colour temperature. G9 halogen bulbs are available in 25w, 40w and 60-watt versions offering a lamp life of up to 3,000 hours, three times that of an incandescent bulb. As it connects to mains voltage, this particular halogen capsule does not require a transformer to operate. G9 bulbs can be used in appliances such as cookers and fridges or display lighting like desk lights and spotlights.