Personally, I don't understand diddly squat about them either; I just bought it only because it either looked good or is of a good brand... Let's just say I had a Vacheron Constantin in my heyday only because my friend's wife works there
...
But the only thing I have left is a Gucci I inherited from my dad (but not a chronometer) and a Casio Wave Ceptor I had from when I REALLY didn't know much about watches... I just liked it for the fact that it aligned with the Atomic Tower :
