Why is essential? If a unidirectional bezel is knocked and unintentionally moved on the dive, it could only Exhibit a longer underwater time. Meaning the wearer will overestimate instead of undervalue immersion time, and in circumstances that need decompression stops, This may be a make-it-or-break-it factor that can help protect https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/