OSRAM ULTRA LIFE automotive lamps are a favorite when it comes to durability. They have an impressive lifespan up to four times longer compared to standard halogen lamps and last up to 100,000 km (with an average annual mileage of 14,259 km and 60% light on). OSRAM provides a 4 year guarantee for the reliable ULTRA LIFE headlight lamps (www.osram.com/am-guarantee). In addition to this, ULTRA LIFE headlight lamps have a modern design with silver cap (H4/H7/H11). They are therefore ideal for frequent drivers or people who use daytime running lights, and can also be used in clear-glass headlights.