Garmin Fenix 8 vs Suunto Ocean: Which Dive Smartwatch Should You Choose?
Posted by Elma Tarr on July 16th, 2025
As dive computers evolve, so do the expectations of divers. Today, many divers are turning to advanced multi-sport smartwatches that seamlessly blend everyday functionality with reliable diving capabilities. One popular option is the dive smartwatch, offering versatile features for both land and underwater use. Among the top contenders in the market, the Garmin Fenix 8 and the Suunto Ocean are two standout choices. The Garmin Fenix 8 offers an exceptional combination of cutting-edge technology and rugged design, making it a popular choice for outdoor enthusiasts who also want a reliable smartwatch for diving. This diving smartwatch is packed with features tailored to divers, including multi-frequency GPS, advanced dive tracking, and robust water resistance.
When comparing the Suunto Ocean vs Garmin Fenix 8, there are notable differences in their approach to dive computing. The Suunto dive computer has long been a trusted name in diving, with a focus on underwater-specific functions such as detailed dive logs, air integration, and nitrogen loading calculations.the Suunto Ocean offers specialized dive computer features designed for serious divers, with robust underwater metrics and data logging, making it a solid option for those focused purely on diving. However, the Garmin Fenix 8 diving steps up the game by offering a more integrated experience for athletes, providing not just diving features but also tracking for activities like running, cycling, and swimming.
Ultimately, whether you opt for the Suunto Ocean or the Garmin Fenix 8, the right choice depends on your diving needs and how much you value versatility in a smartwatch for diving.
This article takes a deep dive into both devices, outlining their strengths, differences, and what type of diver each is best suited for.
Dive Computer Comparison Table
| Feature | Garmin Fenix 8 | Suunto Ocean |
|---|---|---|
| Dive Certification | EN 13319 certified to 40 m; 100 m water resistance | Rated to 60 m; 100 m waterproof |
| Display | 1.3–1.4″ AMOLED, touchscreen + 5-button control | 1.43″ AMOLED sapphire display, touchscreen |
| Gas Mixes Supported | Air/Nitrox (up to 40%), PO2 up to 1.6, Bühlmann ZHL-16c GF | Up to 5 gas mixes (O2 21% – 100%), Bühlmann ZHL-16c GF |
| Air Integration | Not supported | Supported via Suunto Tank Pod |
| Dive Mapping | Surface GPS logging (entry/exit) via Garmin Dive App | 3D dive path mapping using onboard sensors |
| Battery Life (Dive Mode) | Up to 27 hours | Up to 60 hours |
| Battery Life (Smartwatch) | Up to 10 days | Up to 16 days |
| Smart Features | Maps, Garmin Pay, music storage, flashlight, voice assistant | Music control, activity tracking, phone notifications |
| Build & Durability | Rugged titanium or steel case, leak-proof buttons, military-grade build | Stainless steel with sapphire crystal; eco-friendly manufacturing |
| Price (approx.) | $1,000 – $1,200 | $899 |
Garmin Fenix 8: Versatile Dive Smartwatch for Divers and Athletes
The Garmin Fenix 8 is more than just a dive computer. It's a premium multi-sport smartwatch designed for those who train hard, travel light, and dive confidently. While its dive features are not as advanced as some dedicated computers, it still offers everything a recreational diver might need.
Key Dive Features:
- EN 13319 certification (dive-grade)
- Surface GPS tracking for entry/exit points
- Dive modes with air and Nitrox (up to 40%)
- BĂĽhlmann ZHL-16c algorithm with customizable gradient factors
Smartwatch Highlights:
- AMOLED touchscreen + tactile buttons
- Offline maps, voice assistance, music playback
- Garmin Pay for contactless payments
- Built-in flashlight and advanced sports tracking
The Fenix 8 is ideal for divers who also run, hike, cycle, or want a watch that transitions from dive site to boardroom.
Suunto Ocean: The Dive-Focused Smartwatch
Suunto’s Ocean watch bridges the gap between classic dive computers and modern smartwatches. It puts diving first, while still offering over 95 land-based activity modes and essential smartwatch features.
Key Dive Features:
- Rated to 60 m; air integration supported via Suunto Tank Pod
- Supports up to 5 gas mixes, including Trimix
- 3D dive path visualizations using internal sensors
- Long 60-hour dive mode battery life
Smartwatch Highlights:
- AMOLED sapphire touchscreen display
- Durable stainless steel build
- Activity tracking, phone notifications, music control
- Eco-friendly design and manufacturing
Suunto Ocean is great for divers who prioritize extended dive capabilities, tank pressure tracking, and conservation-minded gear.
Which diving smartwatch Should You Choose?
Choose the Garmin Fenix 8 if you:
- Want an all-in-one watch for sports, travel, and diving
- Prefer a device with more smart features (maps, music, payments)
- Don’t need air integration or deep tech diving capabilities
Choose the Suunto Ocean if you:
- Want air integration and multi-gas support
- Dive frequently or travel for long dive trips (60-hour battery)
- Prefer a dive-first device with long-term underwater performance
Final Thoughts
Both the Garmin Fenix 8 and Suunto Ocean represent a new era of dive computers — smart, stylish, and adventure-ready. The decision comes down to your diving needs vs. your lifestyle preferences. For all-in-one performance, Garmin has the edge. For pure diving power, Suunto leads the way.
Explore both on our website, or contact our dive gear specialists to help you find the perfect fit.
Need help choosing? Book a free consultation with our team and gear up for your next dive adventure!
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Meet Your Expert
Elma Tarr
Elma Tarr is the Scuba Gear Brand Manager at Bluewater Photo and an IDC Staff Instructor with over 3,500 dives to her name. Her passion for the underwater world began over 21 years ago, and she has since turned that passion into a thriving profession.
Elma’s interest in dive gear was sparked by a key insight early in her teaching career: one of the biggest obstacles for new divers was often improperly fitting equipment. This realization drove her to deepen her expertise in gear selection, fit, and performance, making her a trusted resource for divers of all levels.
An avid traveler and underwater photographer, Elma has explored dive sites across the globe, with a special love for macro photography. Her blend of field experience, technical knowledge, and customer-first mindset makes her an invaluable part of the Bluewater Photo team.
