PREMIUM xenon bulbs has a perfectly matched mix of xenon gas and enhanced plinth, so that the core of the filament is even more stable. It's dedicated to original xenon reflectors, which need D2S bulbs (xenon reflectors with lens). It doesn't need any modifications of existing installation. It has perfectly set the focal length and plug voltage characteristic of the light bulb D2S. Can be used with D2S xenon ballast only or with another (with D2 adapter). Full specification: Lamp type D2S Nominal power 35 W Nominal voltage 12V (converted by ballast 85V) Light colour 6000K Work temperature -30~+80°C Connectors standard