Specification:Features: 1. It is convenient for you to observe which part of the watch is not with the transparent cylinder.2. Designed for testing the water of the watch cases.3. Can test two watches at time.4. Easy for you to operate.5. It is a great accessory for watchmaker and watch repairing.Specification: Condition: Brand NewMaterial: AlloyColor: Shown As PicturesCapacity: 2WatchesMaximum Test Height: 15.5cm/6.1inMaximum Test Width: Approx. 7cm / 2.8inExternal Pressure Connection: 6NPressure Test Range: 0.3-6.0barCylinder Maximum Pressure: 10 barSize: Approx. 240 * 145 * 275mm/9.5 * 5.7 * 10.8inPackage List:1 * Watch TesterUsage:1. Fill the water to the specified . Distilled water is preferred to prevent calcium deposition.2. the watch on the hook.3. Replace the cover and tighten through 2 nuts.4. Use the lever to increase the pressure to 3 (according to the official standard of watch industry) and wait 3 minutes to watch the inside.5. Press the button to let the escape immediately. When the pressure drops, observe the watch: if almost no bubbles escape from the shell, it is that the is not good for escape.In this case, please get the watch out from the water.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.