This clear high temperature coated Precision Lighting PFA-375R40/1 BR40 incandescent light bulb operates at 375 watts and 120 volts. It has a medium (E26) base and an average life of 5,000 hours. The P.F.A. coating (Teflon) around the bulb is a very unique material that combines extreme temperature resistance with high clarity, excellent adhesion and high impact strength. Shatter resistant, it accurately controls infrared heat using low amounts of energy and has the ability to quickly heat rooms, warm foods, or dry damp items.