One’s fine. But unless your name’s Ozzy, keep it that way. And never, ever wear thumb rings. (The Nineties are, like, so last century, dude.)
You want your watch to be the main attraction. Stick to a single bracelet worn on the same wrist as the watch – no more.
Earrings on a man are distracting and the line between cool and corny is so fine it’s all but invisible. Not worth the risk.
The trend towards statement glasses works only if you’re a member of LMFAO. Go with something classic and understated.