Watch Water Resistance Chart & Activity Guide
Match the marking on your watch to an activity, then check the conditions that a rating alone cannot tell you.
Check the rating. Then check the watch.
Use the exact model's manual alongside this guide. No photo or online chart can test a seal.
Choose your watch details and check the guidance. After any change, run the check again to see an updated result.
Compare the manufacturer chart
Select Seiko or the Casio chart above to compare ratings within that source. There is no universal permission chart for every manufacturer.
Read the marking before choosing an activity
Use the case-back marking and the exact model's manual. The selector groups common bar, ATM and metre labels as rating categories, not as a depth calculator. A plain 200 m marking and an explicit Diver’s designation are separate choices.
Choose the source that applies to your watch. Seiko's general chart and the chart in Casio's module 3592 manual have different coverage. An unlisted marking or activity produces a manual check rather than an inferred permission.
Factory rating and present condition are separate
A marking stays on a watch as its seals age. A used watch with unknown service history needs a condition check before you rely on that rating. This tool cannot inspect gaskets or perform a pressure test.
The result keeps the chart's rating guidance visible even when your condition answers call for inspection. A recent test does not override the model's activity restrictions.
Manufacturer exceptions matter
Seiko's general chart includes showering in a grouped activity column, while its care guidance cautions against soap, baths and sauna use. This guide treats a soapy shower as an exposure to avoid. Casio's cited precautions also restrict soap and hot, humid environments.
The Casio source is a standard daily-use chart, not documentation for every Casio diver. For a dedicated diver or an unlisted model, follow its own manual. Neither a bigger number nor a general chart settles saturation-diving suitability.
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Frequently Asked Questions
Does 50 m mean I can dive to 50 metres?
Do not use a rating label as a personal diving-depth limit. Select the intended activity and read the exact model's instructions. Ordinary water-resistance ratings and explicit diver designations are distinct in this guide.
Can a used watch still have its original water resistance?
The original marking cannot answer that. Seals and case condition may have changed. Have a qualified service centre assess the watch before relying on its water resistance.
Why does my result ask for the manual?
The selected manufacturer chart does not cover every marking, activity or model. The guide leaves those cases unresolved rather than treating another brand's guidance as permission.
Can Watchsy check water resistance from a photo?
No. A photo may help research the watch reference or read a marking, but it cannot assess sealing performance. That requires physical inspection and appropriate testing.
Are my answers uploaded?
The guide runs in your browser. Its tool-use events do not include your rating, activity, condition or strap answers.
Need help finding the watch reference?
Use Watchsy to research a watch from a photo, then confirm its identity and instructions with the manufacturer. A photo cannot test its seals.
