Care rules
- Handle with care — avoid extreme shocks and harsh treatment, which shorten the watch’s life
- No sharp objects when cleaning
- Avoid chemical cleaners and solvents like WD-40 — they can ruin the waterproof seals
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Warm water soak: submerge in warm (not hot) water for 10–30 minutes to dissolve salt or grit / rinse out debris
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Vinegar wash: soak in a 50/50 mix of white vinegar and tepid water for a couple of hours, gently brush around the button with a soft toothbrush, wash with dish soap
You can use a jar with a lid, block the watch so it can’t rattle around, then shake the jar with the watch inside
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Press & flush: While submerged or under a low-pressure faucet, repeatedly press the Down button ~20 times to flush out trapped particles / wiggle the button under running water
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Unstick by hand: Rotate & pull out the button
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Lubrication: Tiny drop of silicone-based spray in the button gaps with a toothpick, then work the button in and out
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Button recalibration (software-level fix, not physical cleaning)
- Plug the watch into a computer that can read MTP devices (a third-party program 1 may be needed for the Mac to see the watch as a drive)
- Locate the watch’s drive on the computer and open it
- Create an empty file named
KEY_CALIBRATION.BINin the Internal Storage — it must not sit in a subfolder - Disconnect the watch from the computer
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Such as Android File Transfer or OpenMTP ⌃
