Product DescriptionThis watch waterproof tester is used for testing the waterproofness of watch cases. By exerting pressure to sealed cylinder, underwater status of tens of meters can be simulated. Pressure differential (inside and out) of test watches will appear after cylinder is decompressed. By observing through transparent cylinder, small bubbles can be visually observed from leakage positions if watches are of weak waterproofness. (Two watches can be tested at one time.)How To UseTry your best to pull up watch holder.Loosen screws to open the lid.Put in enough water to the red line on cylinder. It is preferable to use distilled water in order to avoid limy deposit.Hang the test watches on watch holders/hook.Assemble the lid and screws back.Swing pressure lever to raise pressure to 3atm (requirement according to the official standard of world leading watch industries), wait 3 minutes after reaching expected pressure, thus enabling enough air to get into test watches.Push down watch holder beneath water, eject the air.Observe carefully. Watch is of poor leakproofness if bubbles escape from the case. In this case, lift the watch out of the water.SpecificationsCapacity: 2 watchesMain Material: AluminumMaximum Test Height: 2.8" (72mm)Maximum Test Width: 2.6" (65mm)External Pressure Interface: 6NPressure Test Range: 0.3~6bar (0.3~6atm approx.)Cylinder Maximum Pressure: 10bar (10atm approx.)Cylinder External Diameter: 3.1" (80mm)Cylinder Inside Diameter: 2.6" (65mm)Cylinder Height: 5.5" (140mm)Net Weight: 7.5lbs (3.4 kg)Package Dimensions (L*W*H): 13"*12"*8" (32*28*18cm)Package Content1 X Watch Waterproof Tester