ith the launch of the Bivouac in 1962, and the Bivouac 9000 in 2017, the brand has proven its leadership in the field of indispensable tool watches. Marking the 50th anniversary of a dive watch that was one of the first to measure not just dive time, but also dive depth accurately, the new Bathy 120 MemoDepth sets a new standard.

What is truly fascinating about the depth gauge is the way it works, as it turns one of the established rules of watchmaking completely on its head. Never let water get inside of a watch? Quite the opposite…

Click on the image to enlarge PDF

The second oldest Swiss watch brand has been renowned for its pursuit of ambitious goals. Its mechanical watches conquer the highest altitudes and measure the deepest depths, making them indispensable companions to explorers and adventurers who need reliable instruments.

The Bathy 120 MemoDepth features apertures in the case back that invite water inside. The chamber filled with water is bordered by the depth gauge membrane, which is hermetically separated from the watch movement. Water entering this separate chamber through the apertures causes the membrane to compress as the pressure increases.

A mechanical contact sensor inside the watch reacts to this compression and conveys the information via the blue hands of the depth gauge, which shows the dive depth on a nonlinear display. Dive depths up to 120 m can be measured extremely precisely, and the maximum depth can also be recorded by the MemoDepth gauge.