The LIGHT@DAY lamp family: for all exterior vehicle lamps
 
When driving with lights on during the day, the headlights and all other exterior vehicle lights (rear lights, number plate illumination, etc.) are also on. For this reason, in addition to headlight bulbs, additional extended-life lamps are being developed for the LIGHT@DAY range.
 
If you use LIGHT@DAY headlight bulbs, it also makes good sense to use LIGHT@DAY supplementary light bulbs as well. This makes your car safer all round and avoids additional expense - especially for the smaller lights.