Why is usually that essential? If a unidirectional bezel is knocked and unintentionally moved on the dive, it could only Screen an extended underwater time. Meaning 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 element that assists https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/