Legibility: Protected by the watch case and sapphire crystal, the bi-directional rotating bezel offers a clearer time indication in complex environments. Practicality: The bi-directional rotating bezel allows for quick and easy adjustments to the timing, providing flexibility and convenience for the user. Different Paths: The unidirectional rotating bezel ensures that the remaining time seen by the diver is always less than or equal to the actual remaining time, while the diving watch designed with an inner rotating bezel avoids timing errors caused by misoperation by a crown locking mechanism.