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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 6 min read · Independent comparison
If you want a phone-free swim with the biggest built-in music library and a dedicated MP3/Bluetooth toggle, choose ELYXFUL Bone Conduction Swimming; if you need the newer wireless connection and a lighter, more minimal open-ear set with a magnetic charger, choose Opinta Swimming Headphones.
• ELYXFUL's biggest strength: a 64GB phone-free MP3 player built in, so you can load a huge music library and swim without carrying anything.
• ELYXFUL's biggest trade-off: the most useful swimming features — that 64GB storage and the MP3/Bluetooth mode switch — are the ones you'll rely on most, and it's the bulkier, more "kit-heavy" of the two.
• Opinta's biggest strength: newer Bluetooth 6.0 wireless, a magnetic charging design, and a lighter open-ear build that's easy to carry.
• Opinta's biggest trade-off: less built-in storage (32GB) and no bundled earplugs listed, so for lap swimming you'll lean on the MP3 mode and your own fit.
• Pick ELYXFUL if you want maximum on-board music and a full swimming bundle (earplugs, spare cables, pouch included).
• Pick Opinta if you want the latest Bluetooth, simple magnetic charging, and a lighter everyday set for running, cycling and travel.
The ELYXFUL is built around one clear idea: keep your music with you and leave the phone in the locker. It's a bone conduction, open-ear set rated IP68 for full submersion, and its headline spec is the 64GB of built-in memory. That's the difference-maker for swimmers who hate re-syncing playlists or worrying about a phone on the pool deck — you load thousands of tracks once and just swim.
It also gives you a genuine dual-mode design. You switch between MP3 mode (for underwater, where Bluetooth can't reach) and Bluetooth mode (for land). Bluetooth is version 5.3 with a 33-foot range, and there's a built-in mic for calls and voice pickup outside the pool. In the box you get two USB Type-C cables plus an extension cable, two sets of waterproof silicone earplugs, a lightweight carry bag and a manual — a notably complete kit. Battery is 8 hours of playback with a 2-hour charge, and the wraparound frame is meant to stay put through flip turns and sprints. Frequency range is 200Hz–20,000Hz.
Opinta Swimming Headphones: Who It's For
The Opinta takes the opposite approach: it's the lighter, more minimalist open-ear set, and it leans into modern wireless. It's an IPX8 bone conduction headphone with an open-ear design, a built-in microphone, and Bluetooth 6.0 — a newer version than the ELYXFUL's 5.3 — with a 10-meter effective range. The brand is explicit that Bluetooth can't transmit underwater, so you switch to MP3 mode when you're actually in the pool.
On-board memory is 32GB (the brand states this holds up to around 8,000 tracks), and it supports MP3, WAV, WMA, M4A and FLAC — a genuinely useful format list if your library isn't all MP3. Battery is 8 hours of playback with a 2-hour charge and up to 110 hours of standby, and charging is magnetic, which is a small but real quality-of-life detail: no fiddling with a port cover. Frequency range matches at 200Hz–20,000Hz, and it's a single-item package with a 1-year warranty.
Who should buy it: runners, cyclists and marathon-style athletes who want a light, carry-anywhere open-ear set with the latest Bluetooth, plus swimmers who want a straightforward MP3 fallback for the pool. Who should skip it: anyone who needs maximum built-in storage, or who wants earplugs and spare charging cables included out of the box — the Opinta sheet doesn't list them.
• Best for built-in music library → ELYXFUL Bone Conduction Swimming. 64GB versus 32GB is the single biggest spec gap here.
• Best for newest wireless connection → Opinta Swimming Headphones. Bluetooth 6.0 versus Bluetooth 5.3.
• Best for battery and charging convenience → Opinta Swimming Headphones. Same 8-hour playback, but magnetic charging and 110-hour standby.
• Best bundled kit for pool swimmers → ELYXFUL Bone Conduction Swimming. Two sets of earplugs, two charging cables plus an extension, and a carry pouch are included.
• Best for pure lap-swimming setup → ELYXFUL Bone Conduction Swimming. The IP68 rating, wraparound secure fit and included earplugs are aimed squarely at pool work.
• Best for light, everyday training → Opinta Swimming Headphones. A lighter open-ear build that's easy to wear and carry for running and cycling.
• Best for file-format flexibility → Opinta Swimming Headphones. Its stated support for FLAC, M4A, WAV and WMA helps if your library isn't plain MP3.
• Best for land use with calls → both. Each has a built-in mic; the difference is the ELYXFUL adds a longer 33-foot Bluetooth range.
In my opinion, if swimming is the main event and you want to load a big library and never think about your phone again, I'd buy the ELYXFUL Bone Conduction Swimming — the 64GB storage and the full pool-ready kit (earplugs, spare cables, pouch) make it the more purpose-built swim companion. If instead you want the newest Bluetooth, magnetic charging and a lighter set you'll also happily wear on runs and rides, I'd pick the Opinta Swimming Headphones. Both are 8-hour, 2-hour-charge, open-ear bone conduction sets with a 200Hz–20,000Hz range — so the real tiebreaker is storage and kit versus wireless and lightness. Check the current price on Amazon before you commit, since that's the one thing the specs can't tell you.
FAQ
No. Both brands state that Bluetooth can't transmit through water, so you switch to MP3 mode when you're submerged. On land, the ELYXFUL uses Bluetooth 5.3 and the Opinta uses Bluetooth 6.0.
The ELYXFUL has 64GB of built-in memory; the Opinta has 32GB, which the brand says holds up to about 8,000 tracks. The Opinta also lists support for MP3, WAV, WMA, M4A and FLAC.
They're effectively tied on playback — both list 8 hours with a 2-hour charge. The Opinta adds a stated 110-hour standby and magnetic charging, which is more convenient day to day.
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