“Can I swim with my watch?”
“What does 50 meters of water resistance actually mean?”
“Is my watch waterproof—or just splash-proof?”
These are some of the most common questions watch owners ask—and for good reason. The term water-resistant can be surprisingly misleading, and understanding what it truly means is essential to protecting the integrity of your timepiece.
When it comes to watches, “water-resistant” doesn’t mean waterproof—and that distinction matters more than you might think. Whether you’re caught in the rain, swimming laps, or planning a dive trip, knowing what your watch can handle is essential for protecting your timepiece.
In this guide, we explain exactly what watch water resistance means, how to interpret depth ratings, and what you can (and can’t) do with your watch—based on how it’s built and rated.
What Does Water Resistance Really Mean?
A watch’s water resistance rating refers to its ability to withstand exposure to water under specific conditions. However, the depth rating printed on the dial or case back isn’t a literal invitation to dive to that depth.
Instead, water resistance is measured under static laboratory pressure—not during real-world activities like swimming, diving, or showering, where motion, temperature, and age of gaskets all impact performance.
For example: A watch rated to 30 meters (3 ATM) isn’t meant for underwater use—it’s only splash resistant.
Water Resistance Ratings, Explained
Here’s what the most common ratings mean in practice:
30 Meters / 3 ATM / 100 Feet
Suitable for: Everyday wear, light splashes, handwashing
Not suitable for: Showering, swimming, submersion
50 Meters / 5 ATM / 165 Feet
Suitable for: Brief immersion, rain, possibly light swimming
Not suitable for: Snorkeling or bathing
100 Meters / 10 ATM / 330 Feet
Suitable for: Swimming, snorkeling
Not suitable for: High-velocity water, diving
200 Meters+ / 20 ATM+
Suitable for: Recreational scuba diving
Check specifics: Ensure the watch is ISO 6425 certified if using for diving
Can You Swim With a Water-Resistant Watch?
Yes, but only if it’s rated 100 meters (10 ATM) or higher—and even then, not all movements are created equal.
For example, brands like Seiko, ORIS, and DOXA manufacture professional-grade dive watches with true performance features, including screw-down crowns, unidirectional bezels, and ISO-certified water resistance. These are ideal choices for underwater use.
Avoid wearing watches under hot water or in saunas—heat can cause seals to expand or contract, compromising protection.
What Features Make a Watch More Water-Ready?
Several construction details help enhance water resistance. Look for these if you plan to wear your watch in or around water:
-
Screw-down crown – Seals tightly to prevent water ingress
-
Screw-down case back – Adds reinforced sealing
-
Gasket integrity – Rubber or synthetic seals around pushers and crystal
-
Case design – Monobloc or sealed cases resist pressure more effectively
-
Crystal thickness – Often reinforced for dive models
Watches like the Breitling Superocean, OMEGA Seamaster, or Grand Seiko Diver’s models include many of these elements and are designed with underwater exploration in mind.
G-Shock: An Exception in Water Resistance
Casio’s G-Shock models are known for their extreme toughness and water resistance—often 200 meters or more. While they’re not traditional dive watches, many G-Shocks perform well in aquatic environments and are ideal for rugged, active lifestyles.
Water Resistance Maintenance: What You Need to Know
Water resistance isn’t permanent. Over time, gaskets age, and seals wear out, especially if your watch is frequently exposed to moisture, heat, or changes in air pressure.
We recommend:
-
Annual water-resistance checks
-
Battery changes (for quartz watches) done by professionals
-
Gasket replacements every few years or as needed
Bring your watch to Little Treasury Jewelers for routine testing and expert maintenance—we service most major brands and offer pressure testing for dive models.
What Not to Do With Your Watch
Even if your watch has a high water resistance rating, it’s best to avoid the following:
-
Operating the crown or pushers underwater
-
Exposing it to hot water (showers, hot tubs)
-
Subjecting it to sudden temperature changes
-
Letting saltwater sit on the case (rinse after use)
Explore Water-Resistant Watches at Little Treasury
Looking for a reliable everyday watch—or a rugged diver ready for your next adventure?
At Little Treasury Jewelers, we carry a full range of timepieces with varying water resistance, including:
-
Professional dive watches from DOXA, ORIS, Seiko, and Breitling
-
Elegant sports models from OMEGA, Grand Seiko, Longines, and NORQAIN
-
Tough digital options like G-Shock for outdoor wear
-
Luxury mechanical watches built for all occasions
Visit us at:
Little Treasury Jewelers
2506 New Market Ln, Gambrills, MD 21054
(410) 721-7100
Mon–Fri: 10am–6pm | Sat: 10am–5pm
Final Word: Know Before You Go
Water resistance is one of the most misunderstood watch features—but once you know what the numbers really mean, you can wear your watch with confidence. Whether you're caught in the rain or headed for the reef, understanding your timepiece’s limits ensures it stays beautiful—and functional—for years to come.
Still not sure what your watch can handle? Our team of experts is here to guide you through water resistance, servicing, and watch care based on your lifestyle.