Haute Couture Watch expert, diving watches are characterised by compliance with ISO standard 6425, i.e. the wearer can dive to a depth of at least 100 metres but must have a time management system. However, Les Rhabilleurs have a few tips to help you recognise these design watches. They have a rotating bezel which must be protected against inadvertent rotation or mishandling. The marks on the bezel must clearly indicate 5-minute periods and the hands and indices must show the time as displayed on a normal watch.