Samsung’s Galaxy Watch Ultra2 lists water resistance to 100 meters and dive tracking to 40 meters. Those are two different promises, and the distance between them is where a buyer is most likely to get the wrong idea.
Price: From $699.99
Where to Buy: Samsung
The watch starts at $699.99 and reaches general availability on August 7, after pre-orders opened July 22. Anyone considering it as dive gear should know which of the two numbers applies to them.
Where the 328 foot figure comes from
The Ultra2 carries a 10 ATM rating, which Samsung expresses as water resistance to 100 meters, or roughly 328 feet. That’s the largest depth figure on the spec sheet, which makes it the one most likely to get repeated.
Samsung’s own footnote narrows it considerably. The rating is tested against the ISO22810 standard and covers up to 10 minutes of immersion. It describes what the sealed case withstands under pressure in a controlled test, not how long a person can stay down wearing it.
Water resistance ratings work this way across the watch industry, so the Ultra2 isn’t unusual. What’s different is that Samsung now publishes a second depth number beside it, and the two collapse into each other easily.
The 130 foot rating is the one Samsung supports
Dive tracking is rated separately to 40 meters, which Samsung’s US page states as 130 feet. The footnote leaves little room: the watch may be used for recreational scuba diving up to 40 meters and should not be used for diving below 40 meters.
That’s the operating ceiling. Recreational agencies generally cap sport diving near the same depth, so the figure matches what most divers will ever do, though it sits well under what 328 feet suggests.
What EN13319 certification actually covers
Galaxy Watch Ultra2 is the first Galaxy Watch built to EN13319, the standard covering diving accessories and depth gauges. The previous Ultra and the Watch5 Pro carried IP68 and no dive certification.
Certification is what separates a watch that survives water from a watch cleared to tell you how deep you are. EN13319 governs how depth measuring equipment behaves and how accurate it has to be, which is why it appears next to the 40 meter figure rather than the 100 meter one.
The Depth app is the part you’d read underwater. Samsung says it shows current depth, elapsed dive time, and water temperature on one screen, and the 5,000 nit display is meant to stay legible through water.
TG hasn’t tested any of it. A certification mark records that a product met a lab standard, which isn’t the same as performing well in open water.
The dive app arrives later this year
Samsung built a separate Ultra2 Diving app with Mares, and that’s where ascent and descent speed tracking and safe dive limits live. Samsung’s announcement says the app is expected later this year, so it won’t be on the watch on August 7.
Samsung’s footnote adds that the Mares app requires a separate download. The company hasn’t published what it costs, and its press materials don’t state whether the app carries a subscription. The subscription terms Samsung did disclose cover third-party services, specifically a 60 day Strava trial and a two month iFIT trial. For everything else Samsung showed at the event, see 8 Big Things Samsung Announced at Galaxy Unpacked 2026.
What’s still unclear
Samsung’s page settles the ratings and leaves the diving questions open.
- What the Mares dive app costs, and whether it needs a subscription
- Whether the Depth app is usable with gloves or in low visibility
- Real world legibility of a 5,000 nit panel at depth
- How the 40 meter limit behaves if a dive briefly exceeds it
- Whether dive logging syncs anywhere outside Samsung Health
TG take
The useful thing Samsung did here was stop implying that a big water resistance number means a watch is dive equipment. The original Ultra had the same 100 meter rating and no business on a dive, and Samsung never pretended otherwise in the footnotes. The Ultra2 is the first one where the second number exists.
The part worth flagging is the order of operations. The certification ships August 7 and the app that uses it properly comes sometime after, which asks buyers to pay for hardware whose headline capability is still incomplete.
Price: From $699.99
Where to Buy: Samsung
If you dive, treat 40 meters as the spec and wait for the Mares app before deciding whether this replaces a dive computer. If you don’t, the depth ratings are the least interesting thing about the watch.
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