Eiko 01021-BP H4 Series Halogen Lamp (Pack of 1) These halogen lamps feature high performance tungsten filaments which produce a brighter, whiter light 12 Volts, 100/80 Watts, 8.33/6.66 Amps T-5 bulb and H4 Axial Pre-Focus base Average bulb life is 100/200 hours Lumens 2200/1700