Why is the fact that essential? If a unidirectional bezel is knocked and unintentionally moved on the dive, it can only Display screen an extended underwater time. Which means the wearer will overestimate rather then underestimate immersion time, and in scenarios that demand decompression stops, this can be a make-it-or-break-it https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/