Why is significant? If a unidirectional bezel is knocked and unintentionally moved on the dive, it may possibly only Show a longer underwater time. Which means the wearer will overestimate instead of underestimate immersion time, and in conditions that call for decompression stops, This may be a make-it-or-split-it variable that https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/