... change color within 2 years.2.Luminous flux of xenon lamp: over 3000lem(color temperature:6000k)3.Lamp type:Single bulb:H1,H3,H4 ... /L), 9004(H/L), 9007(H/L), H13(H/L) Halogen&xenon bulb:H4, 9004, 90074.Special color:Golden, Green, Purple ... DIN 50021351604 tests.4. 300% more light on road than halogen bulb.Stable brightness, never weaken down, brings you wider and ...