rotatable bezel

A Rolex innovation in the 1930s, the rotatable bezel is an exclusive feature of the professional watches. The Oyster Perpetual Submariner’s unidirectional bezel allows a diver to accurately calculate immersion time. Any accidental movement of the bezel shortens the set dive time, but never prolongs it, helping to ensure the diver’s safety. On land or under water, the striking appearance of the rotatable bezel is a key component of the visual identity of the Rolex Submariner.