Suunto Ambit3 Vertical is water resistant to 100 meters/330 feet/10 bars. The meter value relates to an actual diving depth and is tested in the water pressure used in the course of the Suunto water resistance test. This means you can use the watch for swimming and snorkeling, but it should not be used for any form of diving.
Water resistance is not equivalent to functional operating depth. The water resistance marking refers to static air/water tightness withstanding shower, bathing, swimming, poolside diving and snorkeling.
To maintain water resistance, it is recommended to: