Oris watches are tested for water resistance according to our exacting quality standards before they leave our factory and you can be entirely confident in the rating your watch carries. All our watches are rated for water resistance according to ISO standards. It’s important to note that these ratings are not intended to be interpreted literally, as is the case for all Swiss Made watches rated according to the same standards. If your watch is water-resistant up to 50 metres, we would recommend no more than light usage, such as washing hands and showering. Up to 100 metres, your watch is fine for swimming and amateur snorkelling. Up to 300 metres, your watch is fine for scuba diving. At 500 metres and beyond, your watch is suitable for professional or saturation diving.