The airtightness tester is used for the smart watch waterproof tester. When the test standard is IP67 waterproof test standard, the pressure is 13KPA, the inflation time is 3s, the dwell time is 2s, the test time is 4s. The leakage value is not more than 100PA.

If the watch adopts the 50-meter waterproof test standard, the test parameters are 450KPA test pressure, the inflation time is 5s, the dwell time is 3S, and the test time is 6s. The leak value does not exceed 100PA. A gas tightness tester can achieve.