I recently had the superb opportunity to try out the most complicated wristwatch made at modern-day Rolex for a week: the Sky-Dweller. The Sky-Dweller hides its complexity in the simplicity of using it: despite being complicated, the Sky-Dweller is an extremely practical timepiece that takes the businesslike philosophy that Rolex habitually utilizes to new “heights” by adding an interface like a function selector for setting and adjusting the time zones and annual calendar.