This is what separates the Ocean from most outdoor watches. Suunto gives it dedicated single-gas, multigas and freediving modes, customizable audible and vibration alarms, gas switching and its Bühlmann 16 GF decompression algorithm. It can also pair with Suunto’s Tank POD to display tank pressure and gas consumption directly on your wrist.

That makes it considerably more capable underwater than a regular smartwatch with a recreational diving app bolted onto it.

Independent testing supports that impression. DIVE Magazine found the display clear underwater, praised the simple dive interface and particularly liked the vibration alerts.

DIVEIN spent months testing the Ocean and found it particularly strong for recreational and advanced recreational diving. Its testers highlighted the combination of customizable gradient factors, multiple gases and wireless tank integration.

There is an important limit, though. The Ocean supports sophisticated multigas recreational diving, but it isn’t aimed at serious technical setups requiring trimix or closed-circuit rebreather support.

The Display Is a Major Strength

The 1.43-inch AMOLED panel has a 466 × 466 resolution and sits underneath sapphire crystal. That matters underwater where readability isn’t merely cosmetic.

DIVEIN called it the brightest and clearest display it had tested among dive computers, while DIVE Magazine similarly praised its crisp presentation underwater.

The three physical buttons are also important because touchscreens are hardly ideal when you’re wearing gloves.

It’s Also a Legitimate Outdoor Watch

Take the scuba functions away and there is still a fairly serious Suunto sports watch underneath.

You get dual-band GPS/GNSS, offline maps, an altimeter, barometer, compass, storm alerts and route navigation. Suunto currently advertises more than 115 sport modes, along with heart-rate monitoring, sleep stages, HRV-based recovery information and everyday activity tracking.

This makes the Ocean much more versatile than buying a traditional dive computer that spends most of its life sitting in a gear bag. For hiking, trail running and outdoor adventures, the free offline maps are especially useful.

If you don’t dive, however, something like the Suunto Vertical 2 or Suunto Race 2 is easier to justify. The Ocean’s extra bulk and price largely exist because of its diving hardware.

Underwater Route Tracking Is Genuinely Interesting

One of the Ocean’s unusual features is underwater route visualization.

GPS itself doesn’t work underwater. Instead, Suunto combines data from GPS at the surface with the accelerometer, gyroscope, magnetometer and pressure sensor to reconstruct your path.

Afterwards, the route appears inside your dive log in the Suunto app. It’s clever, but don’t confuse it with centimetre-perfect underwater GPS. TechRadar found the first-generation implementation useful but not always completely accurate.

Think of it as a useful visual reconstruction of your dive rather than a precision navigation instrument.

Battery Life Is Excellent

There is independent evidence behind those numbers.

DIVEIN put the Ocean into a pressure chamber at full brightness and recorded 51 hours before the battery died. DIVE Magazine‘s reviewer also reported getting through roughly seven days of intensive diving — around five dives per day — before receiving the first charging alert.

For a colour AMOLED dive computer, that’s impressive.

It’s Big — No Getting Around It

The Ocean measures 49.9mm across and weighs 99g.

That’s acceptable strapped over a wetsuit. At a desk or in bed? Much more noticeable.

DIVE Magazine‘s reviewer specifically said the watch was too large for comfortable overnight wear despite having sleep-tracking features. This is probably the biggest reason not to buy the Ocean purely as a fitness watch.

Smartwatch Features Are Pretty Basic

You get smartphone notifications, media controls and Android quick replies.

But the Ocean isn’t trying to compete with Apple or Samsung on apps, phone calls, payments or other everyday smartwatch features.

DIVEIN’s comparison found Apple’s smartwatch platform substantially more capable, while describing the Ocean as primarily a sports and dive device. That’s an important distinction.

Buy the Ocean because you want a dive computer that happens to be a good everyday sports watch, not because you want an Apple Watch with better scuba features.

Software Support Has Been Good

Suunto has continued adding features after launch.

The May 2026 update brought a tide widget, configurable dive displays, dynamic depth graphs, dual Tank POD support for the same gas, sidemount pressure-difference alarms, improved GNSS accuracy, improved sleep tracking and numerous bug fixes.

That continued development makes the Ocean a more capable product in 2026 than it was when reviews first appeared in 2024.