Bergeon Wet Waterproof Tester, 10 BAR

The Bergeon waterproof tester enables you to assess the water resistance of watch cases up to 10 BAR/ATM (100 meters or 330 feet).

To use the tester, fill the chamber halfway with water, preferably distilled. Then, pressurize the chamber by pumping the lever. Submerge the watch case in the water and release the pressure. If you see bubbles coming from the case, this indicates the location of a leak.