40 watt - 120 volt - S11 - Intermediate Screw (E17) Base - 2 850K - Clear - High Intensity | Sylvania Incandescent Light BulbIt s easy to forget that there was a time before electricity bulbs and bright city lights. When we do forget we start to take the light we have for granted and settle for shabby bulbs and dimmer light. Sylvania never forgets and that s why they continue to provide the finest light bulbs on the market. When darkness can be one bad bulb away don t settle for less than Sylvania.