If you want better Equalizer customization
Choose Samsung Galaxy Buds 4. It scores 4.7 vs 1.0 for Equalizer customization, with a 3.9 overall score.
H2O Audio TRI 2 PRO Headphones Review
Bottom Line
Choose it for swimming-first workouts, secure comfort, and true underwater playback. Skip it if you care most about above-water sound quality or fuss-free controls and music loading.
Best for
Swimmers, triathletes, and open-ear workout users who need real underwater playback, strong water protection, and a headset that stays comfortable through long training sessions. It makes the most sense when the pool is the priority, not all-purpose music listening.
Not for
Anyone who mostly trains on land, wants richer sound, or expects polished controls and app behavior. It is also a weak fit for shoppers who switch devices often or dislike proprietary charging and loading quirks.
Verdict
The H2O Audio TRI 2 PRO fills a real niche better than most alternatives: it is genuinely useful in the pool, comfortable for long sessions, and far more compelling once you rely on onboard playback instead of Bluetooth. The tradeoff is clear, though. You are paying a premium for waterproof versatility, not for top-tier audio or polished everyday usability. Above water, sound quality is often only fair, and Playlist+ plus the physical controls can feel clumsy compared with more mainstream sport headphones. For swimmers, triathletes, and anyone who wants music without bringing a phone into the water, it makes sense. For runners, gym users, or buyers chasing richer sound and simpler controls, the compromises are harder to justify.
Feature Scorecards
Pros
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Water performance is the standout strength. The IPX8 rating and real underwater playback are consistently praised, making these far more convincing for swimmers than most open-ear alternatives.
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These are repeatedly described as lightweight and unobtrusive, which helps during long sessions and makes the headset easy to forget once positioned.
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Once the fit suits your head, stability is excellent. Reviewers regularly say the headset stays put through swimming, running, and vigorous movement, though smaller heads can end up with extra rear loop.
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Charging is straightforward once aligned with the magnetic connector, and case-based charging options add convenience, but the waterproof-focused approach means living with a proprietary setup.
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Comfort is one of the strongest recurring positives. The open-ear design avoids ear-canal fatigue, vibrations are generally well controlled for the category, and several reviewers found them easy to wear for long swims or runs.
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Accessories are a plus. Earplugs and a protective case show up repeatedly as useful inclusions, and they materially improve the swim experience.
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Build quality comes across as sturdy, flexible, and ready for abuse in the pool or during training. The sealed construction and soft exterior inspire confidence.
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The included cases are generally well regarded. Reviewers call them protective and practical, though some found the standard case bulkier than necessary.
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Battery life is solid for the category, with most reviews landing around the claimed 9 hours over Bluetooth and 6 hours from memory mode, though some testing suggests real-world endurance can fall short of the marketing numbers.
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The design is sporty and practical rather than stylish. Reviewers like the soft-touch finish and purpose-built form, even if it looks more specialized than everyday headphones.
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The app is useful for firmware, library management, and Playlist+ tasks, but it is basic rather than feature rich and can feel awkward compared with more polished headphone apps.
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The local-memory feature is the reason to buy these. Reviewers like the 8GB storage, drag-and-drop loading, and true phone-free swimming, but Playlist+ is often described as clunky, slow, or awkward, and 8GB trails some rivals.
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There is enough output for workouts and spoken-word listening, but open-ear use in noisy settings often requires higher volume than ideal.
Cons
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Sound quality is the main compromise. Underwater playback is often described as good or at least satisfying for the category, while above-water listening ranges from merely okay to clearly weak compared with better open-ear or in-ear alternatives.
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The controls are the most common complaint. Physical buttons offer tactile feedback, but many reviewers found them too small, too close together, slow on secondary presses, or easy to trigger incorrectly while moving.
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Bluetooth is fine for some above-water use, but stability is not flawless. Multiple reviewers mention stutters, disconnects, or pairing friction, and underwater Bluetooth remains impractical as expected.
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The open-ear design provides almost no passive isolation on its own. The included earplugs make a noticeable difference in the pool by reducing splash noise and improving perceived clarity and bass.
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Bass is inconsistent. Some reviewers hear solid or even punchier bass, especially underwater or with earplugs, but others call it hollow, woolly, or nearly absent on land.
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The magnetic proprietary cable supports the waterproof design, but it adds one more special accessory to keep track of, and one reviewer reported unreliable wired file transfers.
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Mids and vocals are serviceable rather than standout. They come through well enough for workouts and can sound more balanced underwater, but several reviews say voices lose body or detail above water.
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Call quality is usable but not a strength. Voices tend to sound quiet, distant, or light on detail, which fits the swim-first design but limits all-purpose appeal.
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Treble is acceptable for exercise use, not refined listening. Highs are often described as rolled off, grainy, or slightly distorted when volume climbs.
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Pushing volume too high hurts sound quality. At max levels, reviewers noted distortion, harsher vibrations, and less pleasant listening.
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EQ tuning is essentially missing, so you are mostly stuck with the default sound signature.
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Multipoint support is absent, which limits convenience if you switch between devices often.
Compared With Category Average
Compared with other Earbud Headphones, this product is above average in Water/sweat resistance rating, below average in Equalizer customization, Multipoint connectivity reliability, Maximum volume clarity.
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| Equalizer customization | 1.0 | 3.8 | -2.8 |
| Multipoint connectivity reliability | 1.0 | 3.7 | -2.7 |
| Maximum volume clarity | 2.0 | 3.9 | -1.9 |
| Treble clarity | 2.8 | 4.0 | -1.2 |
| Water/sweat resistance rating | 5.0 | 3.9 | +1.1 |
| Midrange clarity | 2.9 | 4.1 | -1.2 |
| Bluetooth | 3.2 | 4.3 | -1.1 |
| Bass performance | 3.1 | 4.1 | -1.0 |
FAQ
Can the TRI 2 PRO play music underwater without a phone?
Yes. Its onboard memory and Playlist+ or drag-and-drop file loading let you play audio underwater without relying on Bluetooth, which does not work well once submerged.
Does it sound better underwater or on land?
Most reviews say underwater playback is where it shines. Above water, sound is usually described as merely okay to poor compared with better bone conduction or open-ear rivals.
Is it comfortable and secure for swimming?
Usually yes. Comfort and stability are two of the strongest recurring positives, though a few reviewers with smaller heads said the rear loop felt oversized.
Are the controls and Playlist+ easy to use?
Not always. The buttons are a common complaint, and Playlist+ is useful but often described as clunky or time-consuming compared with simply loading files directly.
Consider This Instead
If you want better Multipoint connectivity reliability
Choose Technics EAH-AZ100 Earbuds. It scores 4.6 vs 1.0 for Multipoint connectivity reliability, with a 4.1 overall score.
If you want better Maximum volume clarity
Choose Denon Perl Pro True Wireless Earbuds. It scores 4.7 vs 2.0 for Maximum volume clarity, with a 4.0 overall score.
If you want better Bluetooth
Choose Edifier NeoBuds Planar Earbuds. It scores 5.0 vs 3.2 for Bluetooth, with a 4.2 overall score.
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