Diver’s watches are equipped with a bezel that can only be turned counterclockwise. Set the neutral point of the bezel to the current minute indicator when descending in order to be able to read the elapsed bottom time later on. In addition to your diver’s watch you should use an appropriate table or diving computer in any case. Please consider the water resistance of your model! For scuba-diving only watches with water resistance of 20 ATM and more should be used!