From Osram a high performing Halogen 48mm Aluminium Reflector Lamp that features a narrow 10 degree beam angle perfectly suited to spot display applications in department stores boutiques museums showrooms galleries and the like. Rated at 20 Watt this 12 Volt light source emits a crisp bright White (835) light through its precise spot beam. This is a dimmable light source with a G4 (2 pin) cap/base that is proven to be reliable and offers constant luminosity over its 2000 life.