After a short warm-up phase, the light is beautiful white, approx comes back to the 4000K.
Illumination is also awesome .. incl. My vehicle were the cars with 2x lens and 2x reflector headlamps (clear glass).
(Chevrolet, 2x Mercedes, Audi)
When installing using handkerchief, then no grease stains to burn the bulb a ..
To increase the service life, I recommend turning the spotlight AFTER starting the engine and turn off before stopping, because that the voltage fluctuation is avoided, which is to harm the filament ..