Funny you should ask. After reading the last few pages and the comings and goings of Evan and his play buddies...
THIS is a DOXA. For readers of Clive Cussler's books, this (actually a orange-faced regular dive model) is what Dirk Pitt wore. It is a serious dive watch like the Seiko mechanical models of the era.
Tough...like beat zombies to death tough. This is a three time zone model. I actually find it very useful for my duties here...I can keep track of when the Aussie rascals and the East Coast folks are awake and bantering about.
Very difficult to find these...more likely a serious dive or commercial fishing shop rather than a jewelry store. My wife went on the hunt...online with major watch retailers, etc. folks knew about them but didn't know where to get one. Finally, she just flat called DOXA in Switzerland and had one shipped in for our 30th. I've had this thing for a dozen years and beat it to hell and not once has it had a problem.