This is a universal quartz halogen light head with new double aspheric lenses and zoom focus. It is a 150 watt spot light with a 120 volt dimmer and cable. The optical system of the Dedolight surpasses the traditional concept of studio lights with fresnel lenses. The Dedolight optical system employs two lenses - neither of which is a fresnel. The second lens pre-collects the light, directing it to the front lens and minimizing light loss. This produces unprecedented focusing range and light efficiency, especially in the spot position.