How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a waterproof open-ear headphone that leans hardest into land training and everyday cycling, choose SAMVEK Swimming Headphones Underwater; if you need a bone conduction set that keeps you covered for long-distance swimming and marathon-style endurance work too, choose RELAXYO Swimming Bone Conduction.
• SAMVEK Swimming Headphones Underwater — biggest strength: IP68 water and dust resistance plus a built-in 32GB library (up to 8,000 songs), so you can leave your phone behind and still ride with music.
• SAMVEK Swimming Headphones Underwater — biggest trade-off: no active noise control and a 2-hour charge time for 8 hours of use, so you have to plan ahead.
• RELAXYO Swimming Bone Conduction — biggest strength: the same IP68 rating, Bluetooth 5.4 and 32GB MP3 storage in a set explicitly aimed at marathon, swimming, running and cycling.
• RELAXYO Swimming Bone Conduction — biggest trade-off: a 7-hour average battery life, roughly an hour less than the SAMVEK, and no stated weight or charge time on the sheet.
• Who each pick is for: the SAMVEK suits cyclists and gym/pool users who want a light, all-day open-ear set; the RELAXYO suits endurance athletes who want one pair to stretch across long swims, rides and runs.
The SAMVEK Swimming Headphones Underwater is an open-ear, hook-style bone conduction headphone built around movement. It carries an IP68 waterproof and dustproof rating, which is the number that matters most here: it means the set is designed to tolerate sweat, rain and full submersion, not just a splash. For cycling, that matters because you spend hours in wind, drizzle and road spray while your ears stay open to traffic and your surroundings — the open-ear design deliberately keeps your ear canal free.
At just 32g, the SAMVEK is the lighter of the two on paper, which counts on long rides where a heavier hook starts to press behind the ear. The ABS/PC build, magnetic charging and button controls are straightforward, and the 8-hour average battery life is the better figure here. The catch: a 2-hour charge time, no noise control, and the two figures (32g weight, 2-hour charge) that RELAXYO simply doesn't publish — so if those numbers matter to you, the SAMVEK is the more transparent buy. I'd point cyclists who want the lightest, phone-free setup at this one.
RELAXYO Swimming Bone Conduction: Who It's For
The RELAXYO Swimming Bone Conduction is positioned as a multi-sport pair, and its spec sheet reads like it. It has the same IP68 waterproof rating, the same Bluetooth 5.4, the same bone conduction driver and the same 32GB MP3 mode as the SAMVEK — so on the core "swim with music, ride with music" brief, the two are close. The description specifically calls out marathon, swimming, running and cycling, and notes it can be worn with a swim cap or goggles.
Where RELAXYO differs is the endurance angle. The average battery life is rated at 7 hours, so a long ride or a long training block is within reach, though it trails the SAMVEK's 8 hours. Its listing is thinner on detail: no stated weight, no stated charge time, no stated Bluetooth range. That's not a knock on the hardware — just a sign the sheet tells you less. The bone conduction driver and open-ear hook shape mean you keep ambient awareness, which is exactly what a cyclist wants on the road.
If you want one pair to cover open-water swimming, marathon training and long rides, the RELAXYO's explicit multi-sport framing fits that brief well. If you specifically need the published weight and charge-time figures to plan your kit, RELAXYO leaves you guessing more than SAMVEK does.
Side-by-Side: Which Should You Choose?
• Best for the lightest carry on long rides → SAMVEK Swimming Headphones Underwater, which publishes a 32g weight; RELAXYO doesn't state one.
• Best for multi-sport versatility (swim, run, ride, marathon) → RELAXYO Swimming Bone Conduction, whose description names all of those activities.
• Best for phone-free music on the bike → both, since each has 32GB MP3 storage — just remember Bluetooth is blocked underwater, so switch to MP3 mode in the pool.
• Best for swimmers who wear a cap or goggles → RELAXYO Swimming Bone Conduction, which explicitly says it can be worn with them.
• Best for spec transparency → SAMVEK Swimming Headphones Underwater, which publishes weight, battery and charge time; RELAXYO publishes only battery life.
• Best for open-ear road awareness → either, as both use a bone conduction open-ear hook design with no noise control, keeping your ears open to traffic.
• Best for quick charging expectations → check the current price and details on Amazon, since only SAMVEK states a 2-hour charge time.
In my opinion, I would buy the SAMVEK Swimming Headphones Underwater for a cycling-first buyer. It publishes the full picture — IP68, 32GB MP3 mode, 8 hours of battery, a 2-hour charge and a 32g weight — and that lighter, longer-lasting profile is the better fit for hours on a bike where every gram behind the ear adds up. The RELAXYO Swimming Bone Conduction is a legitimate alternative if your priority is one pair for marathon-style endurance across swim and land, but its thinner spec sheet leaves more questions. For most riders, I'd take the SAMVEK.
FAQ
Both are open-ear bone conduction sets with IP68, Bluetooth 5.4 and 32GB MP3 storage, so either works on a bike. I'd give the SAMVEK the edge for cycling because it publishes a lighter 32g weight and a longer 8-hour battery versus RELAXYO's 7 hours.
Neither set lists active noise control. The open-ear bone conduction design keeps your ear canal open on purpose, so you hear traffic and surroundings while riding — a safety plus, not a flaw.
Both pack IP68, Bluetooth 5.4, 32GB storage and a bone conduction driver, so the hardware overlaps closely. SAMVEK publishes more specs; RELAXYO names more sports. Check the current price on Amazon to see which fits your budget.
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