Incandescent Bulb, Bulb Base Type Miniature Screw (E10), Bulb Housing Glass, Bulb Shape G3-1/2, Bulb Finish Clear, Color Rendering Index 100, Color Temperature 2341K, Lumens 19 lm, Light Technology Incandescent, Shatter- No, Trade Number 1447, Voltage 18V AC, Watts 2.7 W, Bulb Beam Angle Not Applicable, Rated Life 250 hr, Dimmable No, For Enclosed Fixtures No, Three-Way No, Light Color White, Indoor/Outdoor Usage Indoor Only, Overall Length 15/16 in