Why is usually that critical? If a unidirectional bezel is knocked and accidentally moved with a dive, it can only Screen a longer underwater time. Which means the wearer will overestimate rather than undervalue immersion time, and in predicaments that require decompression stops, this can be a make-it-or-split-it issue that https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/