Supra Life 10,000 hour tough coat incandescents are engineered to last up to 10 times longer than standard light bulbs, therefore reducing operation. Tough coat lamps contain a rubberized outer coating to prevent bulb shattering and comply with city and state fire codes. Equipped with a rugged 5 filament support, pure tungsten coil, reflector disc, and brass base, Supra Life lamps will burn continuously for an average life of 18 months in commercial applications and up to 6 years in basic household use.