Miniature Halogen Bulb, Bulb Base Type Medium Prefocus (P28s), Bulb Dia. 7/9 in, Bulb Shape T6, Color Temperature 3050K, Lumens 11,000 lm, Light Technology Halogen, Overall Length 5 in, Shatter- No, Trade Number 00390, Voltage 120V AC, Watts 500 W, Rated Life 500 hr, Bulb Finish Clear, Dimmable Yes, Three-Way No, Light Color White, Rough Service No, ANSI Code BTL, Indoor/Outdoor Usage Indoor Only, Standards Meets 2012 Lighting Legislation Energy Standards