Philips X-treme Power performance headlight bulbs deliver up to an astounding 80% more light than standard halogens, making them arguably the brightest DOT-approved halogen bulbs available. X-treme Power bulbs deliver superior nighttime visibility with a powerful beam that enhances driver performance and driving safety. X-treme Power's aggressive style is a new "must-have" for tuners and high performance drivers.Expires Jan 1, 2011