The watch is fixed to a wire inside the ship's bridge. Once a month, deep-sea divers check that the case is watertight and the movement is functioning correctly.
To date, the P42 HYPERBAR remains watertight at over 1000 metres and continues to give the exact time without any variation since its immersion.

The expected lifetime of the watch’s lithium battery is approximately ten years. We will keep you updated on the evolution of this underwater adventure.