Why the GMT-Master II Is Not Always the AnswerThe case for the GMT-Master II is real. The bidirectional bezel lets you track a second time zone passively. The quick-set GMT hand moves independently of the local-hour hand, so you can update local time on arrival without losing your reference timezone. The bracelet is fantastic. Rolex's tolerances mean these watches run reliably for years between services. The piece is quite simply one of the most successful and enduring timepieces in the history of the watch industry.But the GMT complication is designed for a specific use case: tracking two time zones simultaneously when you need to know both at a glance. If you're crossing only one or two zones with regularity, a fixed 24-hour subdial or a simple world-timer might serve you just as well or better for less money. If you're crossing four or more zones in a week, the two-zone GMT starts to feel like a partial solution.