Fluorescent Full Spectrum Bulb 85 Watt Photography Photo Video Daylight Balanced Pure White by PBL ONE (1) 85 WATT DAYLIGHT BALANCED FULL SPECTRUM LIGHT PURE WHITE INCANDESCENT EQUIVALENT 425 WATTS THESE BULBS ARE ALSO RECOMMENDED BY PSYCHOLOGISTS FOR SAD(SEASONAL AFFECTIVE DISORDER) WINTER BLUES USE FOR PHOTOGRAPHER OR VIDEO 5500K SPIRAL SHAPE, LIGHT SOCKET BASE E26,AVERAGE LIFE 10,000 HOURS