SYLVANIA 14938 - 500 Watt Light Bulb - PAR64 - Narrow Spot Sealed Beam - 2,000 Life Hours - 11,000 Candlepower - 2850 Kelvin Incandescent bulbs are dimmable bulb and din not a have poor quality light as low energy bulbs best used in household and commercial lighting, decorative &amp; advertising lighting, portable lighting Stock now on Incandescent bulbs before 2012 phase out of incandescent light bulbs Sylvania PAR64 incendescent bulb, 500W, 120V, Narrow Spot NSP Base: GX16d Mogul End Prong, Rated Life (hrs): 2000, Luminous Flux: 6500