Bulb ED23.5 ANSI Code H38 Base Mogul Screw (E39) Wattage 100 Initial Lumens 3850 Color Temperature 5700 K Color Rendering Index (CRI) 15 Rated Life (MIN) 24000 hrs Product Code 12471 Description HR100A38 UPC 043168124713 Primary Application Street Lighting; Motion-Sensing & Security