This electric ballast is designed for use with a variety of Audi and VW models and has a voltage of 12V and a wattage of 35W. It is specifically made for use with Xenon lighting technology and is an OE/OEM part number BK0.941.597. The manufacturer part number is 38A458603 and it was made in China. This headlight ballast is perfect for those who need to replace their current ballast or want to upgrade their lighting system. It is suited for DC current and is not a vintage part.