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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a bone-conduction swim and cycling headset with the newer Bluetooth generation and a higher water-resistance rating, choose Opinta Swimming Headphones; if you need the lighter of the two with a hook-style fit and a simpler button layout, choose SAMVEK Swimming Headphones Underwater.
• Opinta's biggest strength: IPX8 water resistance plus Bluetooth 6.0 — the highest waterproof rating and the newest wireless version in this matchup, and it also lists a built-in mic for calls and voice assistants.
• Opinta's biggest trade-off: There's no carry accessory mentioned in the data, and the enclosure listing (polycarbonate lens, plastic frame) is oddly worded for a headphone — worth a second look before you commit.
• SAMVEK's biggest strength: Genuinely light at 32g with a hook-shaped, open-ear fit and physical button controls, and it explicitly ships with a cable in the box.
• SAMVEK's biggest trade-off: IP68 rather than IPX8, and Bluetooth 5.4 instead of 6.0 — older wireless, and no microphone or call features are mentioned at all.
• Who each pick is for: Opinta for the swimmer-cyclist who wants calls, awareness and the newest wireless spec; SAMVEK for the rider who prioritizes a barely-there 32g fit and tactile buttons over extras.
The Opinta Swimming Headphones (model X7 Pro) are built around one idea: keep music going while your head is in the water and your ears stay open to traffic. The headline spec is IPX8 water resistance, which the manufacturer describes as protecting against sweat, rain and full submersion. The critical caveat appears twice in the product data — Bluetooth cannot transmit through water, so you have to switch to MP3 mode once you're submerged. That's a physics limitation, not a flaw, but it means your pool laps run off the internal memory, not your phone.
That internal memory is 32GB, which the spec sheet pegs at roughly 8,000 tracks across MP3, WAV, WMA, M4A and FLAC. For a cyclist, that's the more interesting number: you can leave the phone at home entirely on a long ride and still have hours of music. The Bluetooth 6.0 radio covers a 10-meter range and is described as more stable in crowded, noisy environments — the classic failure case being a busy city street where older Bluetooth stutters.
Buy it if you want one headset for pool laps and road rides, you take calls while training, and you'd rather have the newest Bluetooth and the higher waterproof rating. Skip it if you want the absolute lightest thing on your head, or if you don't care about calls and would rather not pay for a mic you'll never use. Also skip if you need color options — the only color listed is orange.
SAMVEK Swimming Headphones Underwater: Who It's For
The SAMVEK Swimming Headphones Underwater (model X7) make a different bet: strip it back, make it light, make it tactile. The spec sheet lists 32g, which is the standout number here — roughly a third of the Opinta's listed weight. For cycling, that matters more than it sounds. A headset that disappears on your head is one you stop noticing twenty miles in, and the hook-style earpiece shape plus the adjustment straps described in the product copy suggest a fit designed to stay put through movement.
Water resistance is IP68, which covers both water and dust ingress. As with the Opinta, the data is explicit that Bluetooth signal is blocked underwater and you must switch to MP3 mode while swimming. The built-in storage is 32GB, quoted at 8,000+ songs — identical capacity to the Opinta, so neither has an edge on library size.
Connectivity is Bluetooth 5.4 over a 10-meter range, described as fast-pairing and stable for outdoor activities. That's a solid, current standard, though it sits a generation behind the Opinta's 6.0. Charging is magnetic, with the same 2-hour charge and 8-hour playback figures as the Opinta. Here's the real difference beyond weight: the SAMVEK data mentions no microphone and no call features at all. It's a music-and-awareness device, controlled by physical push buttons — which many riders genuinely prefer over touch, because you can find and press a button through a glove or a wet hand without looking.
The enclosure is ABS, plastic and polycarbonate, finished in jet black, and the box includes a cable and a user manual. Buy it if you want the lightest possible fit, you like real buttons you can operate by feel, and you never take calls mid-workout. Skip it if you want a microphone, the newest Bluetooth version, or a more protective IPX8 rating for heavy submersion.
• Best for water resistance → Opinta. IPX8 outranks IP68 on the submersion front, and it's the rating explicitly framed around swimming.
• Best for weight and long-ride comfort → SAMVEK. 32g versus roughly 110g is a big gap when a headset sits on your skull for hours.
• Best for calls and voice assistants → Opinta. It's the only one of the two with a built-in microphone in the spec sheet.
• Best for glove-friendly controls → SAMVEK. Physical push buttons beat touch controls when your hands are cold, wet or wrapped in cycling gloves.
• Best for newest wireless tech → Opinta. Bluetooth 6.0 over 5.4, with the sheet specifically calling out stability in crowded environments.
• Best for music capacity → a tie. Both list 32GB and roughly 8,000 tracks. Neither wins.
• Best for charging convenience → a tie. Both use magnetic charging, both quote 2 hours to charge and 8 hours of playback.
• Best for a plain, no-extras setup → SAMVEK. No mic, no calls, no fuss — just music, awareness and a button.
In my opinion, I'd buy the Opinta Swimming Headphones. The IPX8 rating and the built-in microphone make it the more versatile of the two — it's the one that works for a pool session in the morning and a call-taking commute in the afternoon, and Bluetooth 6.0 is the safer long-term bet for stable connections in busy areas. The catch is weight: at roughly 110g it's the heavier headset, so if you know you're sensitive to that, the SAMVEK's 32g frame and tactile buttons are a legitimate reason to go the other way. But for most people splitting time between swimming and cycling, Opinta covers more ground. Do check the current price on Amazon before deciding, since that's the one variable I can't weigh in for you.
On paper, yes — IPX8 is a higher water-resistance rating than IP68 and is the one the manufacturer frames specifically around swimming. Both require you to switch to MP3 mode underwater, because Bluetooth cannot pass through water.
SAMVEK, clearly. It's listed at 32g, while Opinta is listed at 0.11 kg (about 110g). If all-day wear comfort is your top priority, that difference is the deciding factor.
Both are open-ear bone conduction designs, so your ear canal stays open and you can hear traffic while music plays. SAMVEK adds physical push buttons that are easier to use with gloves; Opinta adds a microphone for calls.
Yes, per the spec sheets. Both quote a 2-hour charge time, up to 8 hours of music playback, and magnetic charging. Opinta additionally lists up to 110 hours of standby time.
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