For 10 years now Vision X's halogen headlight bulbs have been on the forefront of high output halogen lighting. And the recently introduced lifetime warranty on standard wattage bulbs just places Vision X further in front. Superwhite halogen bulbs are unique in their design and construction. Designed to perfectly replace factory headlight bulbs in everyway but one, light output and color; and in these areas Vision X bulbs outshine the factory bulbs. Providing a whiter light for driving at night, and increasing the light output. Making it easier to see at night. Not only in front of your vehicle but peripherally as well.