I actually spoke to them about it, the reason they advertise it as such (as far as I understood) is that its such a powerful daylight light that if someone is going to use it at night and an accident might result from it (by blinding the drivers) they will have to carry the responsibility for it at least legally, it must be sold as a light only for DAYLIGHT for legal reasons, also one has to tick a box there on the website prior to purchasing (I believe for taking responsibility- legally- over using it for its daylight purpose...)