What are the differences between halogen and xenon headlights?

[McGriffin]

The differences between halogen and xenon headlights are: 1. Different light intensity: Halogen headlights output 1200 lumens; xenon headlights output 4500 lumens. 2. Different durability: The service life of halogen headlights is 500 hours; the service life of xenon headlights is up to 30,000 hours or more. 3. Different lighting effects: Halogen headlights provide uniform light; xenon headlights have relatively concentrated light with darker sides. 4. Different illumination distances: Halogen headlights have an illumination distance of 4.4 meters; xenon headlights have an illumination distance of 5.2 meters. The working principle of halogen headlights is: Halogen gas such as iodine or bromine is injected into the bulb, and the tungsten filament sublimated at high temperature chemically reacts with the halogen. The cooled tungsten will re-solidify on the tungsten filament, forming a balanced cycle to prevent premature breakage of the tungsten filament.