Why is that critical? If a unidirectional bezel is knocked and unintentionally moved on a dive, it may only Exhibit an extended underwater time. Meaning the wearer will overestimate rather than undervalue immersion time, As well as in circumstances that involve decompression stops, this can be a make-it-or-split-it issue that https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/