Its function is actually quite simple: before a diver's descent, the 12 o'clock bezel marker is aligned with the minute hand, allowing the elapsed time, up to 60 minutes, to be read on the bezel (which is why quite a few dive watches come with a particularly prominent minute hand).

Rolex makes their own gold. Because Rolex controls the production and machining of their gold, they are able to strictly ensure not only quality but the best looking parts. To our knowledge, Rolex is the only watch manufacture that makes their own gold or even has a real foundry in-house.

There is no official definition for what is considered a luxury watch. In general, manually manufactured watches of extraordinarily high quality and with a premium price are classified as luxury watches. Unlike quartz watches, mechanical watches are not powered by a battery.