

A must have for your shop or bench is this easy to use Calypso WaterProof Tester. Follow the directions and there is no chance of water getting into the watch case. Fill the jar with water to the marked line in the jar. Hang the watch on the plunger above the water line and seal the jar. Using the manual pump, raise the pressure in the jar up to 10 ATM; then slowly lower the watch into the water. If air bubbles are seen, make note of the location and remove the watch from the water.