Seiko Titanium SGG707 Wrist Watch

Pros: Looks, accuracy, ease of use
Cons: Price, availability

It may be the most expensive watch I've ever owned, but so far it has lasted me the longest. It's the easiest watch I've ever adjusted, one of the easiest watches I've ever read, and in my opinion one of the best looking watches on the market today. It may only do one thing, but damn--it does it well.