Diving Experience: Capable But Not Technical
After months of diving with our Suunto Ocean, it’s clear to us that this computer excels at recreational diving. The computer is water-resistant to 330 feet (100 m) but has a depth rating of 197 feet (60 m) for diving. The implementation of the Bühlmann ZHL-16C algorithm with customizable gradient factors, plus the ability to support five gases with up to 100% oxygen, make the Ocean well-suited to “advanced” recreational diving.
The Suunto Ocean can connect to multiple transmitters—in fact, this computer and the Garmin Descent Mk3i are the only two smartwatch-style dive computers to have air integration. It can connect to five transmitters, which is less than Garmin’s eight, but five will be enough for most recreational divers. With the Ocean’s very clear display, data such as remaining gas was always easy to read.
Display: Best of the Bunch
In terms of readability and usability, the Suunto Ocean offers an exceptionally easy and pleasant experience. The 1.43-inch AMOLED display with 466×466 pixels is the highest resolution of all the dive computers on the market today. The Suunto Ocean has the best and brightest screen we’ve tested.
Some watch-face computers have an issue wherein dive data is hard to read or distinguish, but the Suunto Ocean uses color coding for depth indication and ascent rates, and colored labels (much like the Shearwaters). I found this helped to efficiently distinguish and understand the data on the screen.
Our only complaint here is lack of customization—you have no freedom in terms of your dive display and you can not change it at all. I would say that since the Suunto Ocean’s display is very easy to read, this probably won’t bother most divers. However, competitors like Shearwater and Garmin allow users to personalize the dive data display, so it feels a bit like the Ocean missed the mark here.
Fitness Capabilities
Suunto produced its first dive computer in 1987 and sports watch in the 2000s, and the Garmin Descent series has been around for nearly a decade, so we’re honestly surprised that Suunto didn’t produce a combo device a little earlier.
That said—and despite the wait—the Suunto Ocean is a worthy competitor to the Garmin fēnix 8, Garmin Descent G2, and the Apple Watch Ultra. With 95+ sports modes, multiple fitness tracking programs, map features, and smart notifications, the Suunto Ocean delivers.
Health monitoring includes sleep tracking, heart rate monitoring, steps, stamina improvements, and stress calculations. Unlike the Garmins, the Suunto is missing more advanced features, such as advanced cycling dynamics, stairs climbed, swim stroke rate etc which, in turn, means less detailed insights.
Honestly, though, for most who don’t want (or even need) all that advanced tracking, the Suunto Ocean will be more than sufficient. The Ocean proves that Suunto can produce dive computers that are serious fitness tools without compromising underwater functionality.
Battery & Test Results
Suunto has claimed between 50-60 hours battery life for everyday wear with diving. We performed our standard battery test, which we complete for all our dive computers. We place them into a mini pressure chamber, charge them to 100%, set them to full brightness, turn off any kind of transmitter capabilities, and keep the computer at 20 feet (6 m) continuously. During our test, the Suunto Ocean achieved 51 hours.
Compared to other dive computers, the Suunto Ocean did well. All the Shearwaters lasted less than 35 hours and the Apple Watch Ultra lasted only 12 hours. The most comparable smartwatch dive computer to the Suunto Ocean was the Garmin fēnix 8, which lasted 47 hours, further highlighting their similarities.
I did test the fēnix 8 on a three-dive-per-day, five-day dive trip and it managed to last the entire trip. I only used it for diving, so I am curious to see how the Ocean would fare in similar conditions.
Comparing to the Competition
Suunto Ocean vs. Apple Watch Ultra
Although these are both smartwatch-style dive computers, the Suunto Ocean and Apple Watch Ultra have a few key differences. While Apple, with the addition of the Oceanic+ app, treats diving as just another activity, Suunto built the Ocean as a dive computer first.
→ Sports watch: Both watches cover 90+ sports with comprehensive tracking. Apple’s fitness ecosystem is with better third-party app integration, while the Ocean focuses on core athletic metrics.
→ Smartwatch: The Apple Watch Ultra dominates here—you can answer calls, reply to messages, use Apple Pay, and access thousands of apps. The Ocean only receives notifications and lacks advanced smart features.
→ Dive computer: This is where their differences become apparent. The Ocean supports five wireless transmitters, multiple gases, and proper decompression algorithms. The Apple Watch Ultra is limited to basic recreational diving with no air integration, making it unsuitable for serious divers. The Ocean’s 51-hour battery life test crushed Apple’s 12-hour limit.
Suunto Ocean vs. Garmin Descent G2
→ Sports watch: Both the G2 and the Ocean cover a wide range of sports. The main difference here is that the Ocean lacks the depth of Garmin’s training ecosystem and long-term health insights.
→ Smartwatch: Both these watches can receive notifications on calls and messages, but can not directly answer calls or reply to messages.
→ Dive computer: Suunto has air integration capabilities that the G2 lacks, making it appealing for divers who prioritize wireless tank monitoring. Suunto won in our battery test—51 hours versus 39 hours. A big plus for the G2 is the extensive technical diving capability, supporting 11 gases, CCR and trimix.
Suunto Ocean vs. Garmin fēnix 8
Both offer similar recreational diving capabilities, but their approaches differ significantly.
→ Sports watch: The Garmin fēnix 8 definitely wins here with its 100-plus activity profiles and advanced training metrics. Comparatively, the Ocean covers basic fitness tracking and lacks the depth of Garmin’s training ecosystem and long-term health insights.
→ Smartwatch: Neither excels here, but the fēnix 8’s microphone, voice commands, and better notification handling give it a slight edge.
→ Dive computer: The Ocean has a deeper depth limit at 196 feet (60 m), has a gauge mode, and can handle five gases and transmitters.
Air Integration
The Ocean pairs with Suunto’s POD transmitters, allowing you to monitor up to five tanks simultaneously. That’s more than Shearwater (max four), but not quite equal to Garmin’s eight.
No transmitter is included in the base model, and adding one bumps the price up to about $1200. Still, that’s more affordable than Garmin’s Descent Mk3i + T2 combo ($1500+). We’d consider the Ocean a great mid-range, air-integrated computer. The Suunto Ocean is more advanced than entry-level wrist computers, but not quite in the tech realm of a Garmin Mk3i or Shearwater Perdix 2.
Price/Quality Ratio
At $900 (or $1200 with transmitter), the Suunto Ocean lands right between beginner recreational dive computers such as the Cressi Neon or Shearwater Tern and ultra-premium models like the Garmin Mk3i or Shearwater Perdix.For recreational divers who want a do-everything device, the Suunto is a strong choice. You’ll be getting…
- A capable dive computer with a modern algorithm
- Excellent everyday smartwatch
- Super clear and bright display
- Great app integration showing 3D mapping
However, technical divers needing trimix or CCR support will find better value in dedicated technical computers.
Do we recommend the Suunto Ocean?
Yes—for recreational and advanced divers. The Suunto Ocean excels as an all-around device for recreational to light technical divers who want a single device for diving and daily wear. The display brightness alone makes it worth considering, and the 3D dive mapping adds genuine value to the diving experience.
Skip it if you need trimix support, regularly dive below 200 feet, or require CCR functionality. You’ll need to look at the Shearwater Teric, Perdix 2.0 or Garmin Mk3i for that. Also, if you’re on good terms with the Garmin or Apple ecosystem, the Suunto’s limited smart features might frustrate you.
Specs & Features
| Display type | AMOLED |
|---|---|
| Display size | 1.43 inches (3.6 cm) |
| Screen resolution | 466 x 466 pixels |
| Battery | Rechargeable via USB-C charger; battery 60 hours in dive mode |
| Size | 1.96 x 1.96 x 0.52" (49.9 x 49.9 x 13.2 mm) |
| Dive depth rating | 196 feet (60 m) |
| Number of gases | Up to five gases |
| Dive modes | Air, nitrox, gauge, freedive |
| Alarms | Vibration & audible |
| Dive log capabilities | Transfer & view dives in the Suunto Dive app |
| Transmitter compatible | Up to five |
| Weight | 3.49 oz (99 g) |
| Number of buttons | 3 |
| Compass | Yes |
| Wrist straps | Silicone; customizable |
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