Why is that important? If a unidirectional bezel is knocked and unintentionally moved on a dive, it could possibly only Exhibit an extended underwater time. That means the wearer will overestimate as opposed to undervalue immersion time, and in conditions that involve decompression stops, this can be a make-it-or-break-it aspect https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/