Manufacted with a strong and robust filament an HB4 P22d Osram Cool Blue Intense headlight bulb. Designed to output a Bluish White colour similar to the Xenon look of high end headlamp bulbs this halogen lamp emits 20% more light and lasts up to twice as long as traditional halogen headlight lamps. Enhanced visibilty of the road ahead increses awareness for you and other drivers heading your way.