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