For Bmw 3 Series F30 F31 2011-2015 Switchback White Yellow LED Headlight Bulbs
✅ Ultra-Long Lifespan: 50,000+ hours of usage—100x longer than standard halogen bulbs. How to use: When turn on the light at first, it would be in 6000K white; then turn it OFF and ON again within 5 seconds, it would be in 3000K golden yellow.