Ushio FCZ 500WF Projector Light Bulb Halogen light bulbs have a longer life and a higher light output than incandescent bulbs Halogen bulbs have a whiter and brighter light and less blackening, dimmable with most dimmers Applications: interior, interior recessed lighting, track lighting, security lighting Ushio Double-Ended halogen bulb, 500W, 120V, Base: R7s Recessed Single Contact, 3000K, Rated Life (Hr): 2000, Luminous Flux (LM): 10700,