Fluorescent Full Spectrum Daylight Balanced Pure White 85 Watt Bulbs Photography Photo Video Set of 4 Steve Kaeser Photographic Lighting One (1) CASE OF 4 FULL SPECTRUM 5500K DAYLIGHT BULBS SPIRAL ENERGY SAVER PURE WHITE LIGHT BULBS BULBS EQUAL 425 WATTS OF INCANDESCENT LIGHT 85 WATT FLUORESCENT, E26 BASE, AVERAGE LIFE OF BULB 10,000 HOURS THESE BULBS ARE ALSO RECOMMENDED BY PSYCHOLOGISTS FOR SAD (SEASONAL AFFECTIVE DISORDER) WINTER BLUES USE FOR PHOTOGRAPHY OR VIDEO, SKIN TONES COME OUT PERFECT