The bulbs of these lamps use full-spectrum light to simulate the color fidelity of natural sunlight at noon, illuminating books, homework, or computer screens with a glare- and distortion-free glow that reduces eyestrain, resulting in clearer vision and optimal color perception. The lamps' full-spectrum technology is the invention of Dr. John Ott, a renowned photobiologist who found that all living organisms require the full spectrum of natural daylight in order to thrive. The proprietary blend of phosphorus inside these bulbs eliminates the color distortion and haze typical of incandescent bulbs, allowing you to work for longer periods with less visual distractions. The lamps' double-hinged design allows the adjustment of both the neck and the shade for optimal light position and the streamlined design fits unobtrusively in limited floor space or on a crowded desktop. The low-heat bulbs are rated to last up to 10,000 hours. Antique bronze frame. Plugs into AC. 6' cord. Floor Lamp. Includes one 25-watt OTT-LITE bulb, which is the incandescent equivalent of a 75-watt bulb. Adjusts 4' to 5' 2" H. 10" Diam. base.