Full Spectrum Fluorescence Bulb 5500k Daylight 50watt 2800 Lumens Photography Photo Video Steve Kaeser Photographic Lighting One (1) 50 watt fluorescent bulb equivalent to 250 watts 2800 lumens, 5500k daylight, CRI 87, bulb life 8,000 hours Produces natural skintones, with out any filtration 90% less heat than incandescent lighting, 120volts Perfect for treatment of S.A.D. - winter blues