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Why is it necessary to redo the waterproofing? Typically, the watches we purchase from large manufacturers already come with basic waterproof functions. Similar to genuine watches, only those labeled as water-resistant to 300 meters or more are suitable for swimming. However, during the production process, some factory-made watches may not achieve a perfect seal, as factory standards do not guarantee full waterproof functionality. Therefore, we redo the waterproofing primarily to ensure its reliability. You can view our process in the following video:

1. Dismantle all waterproof components of the watch.Waterproof disassembly is even more complex than rotor silencing—it requires extremely meticulous dismantling and reassembly, making it difficult for non-professionals to handle properly.
2. Apply grease to the waterproof parts and add waterproof glue.

However, it is regrettable that even with all our reworked waterproofing, the functionality still cannot reach the level of genuine watches. Typically, they fail to pass negative pressure testing during evaluations. Nevertheless, your watch will definitely meet the standard expected for its corresponding rating. The dial indicates: watches labeled <300 meters are suitable for daily water resistance, while those labeled >300 meters can be used for swimming.

PS：Since we do not have waterproof testing equipment, we will use the simplest water immersion test. If a professional instrument report is required, please specify this separately, and an additional $50 testing fee will apply. If you wish to achieve waterproofing at the level of genuine watches, the cost is $280, which includes a complete set of testing reports.