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If you want all-day open-ear comfort with a long 50-hour battery and a charging case that shows you the remaining power, choose Jacuate Open Ear Earbuds; if you need headphones that survive full underwater swimming with built-in MP3 storage and no phone required, choose RELAXYO Swimming Bone Conduction.
• Jacuate Open Ear Earbuds — biggest strength: open-ear hook design at just 6.5g per bud, a claimed 50-hour playtime with an LED power display on the case, and Bluetooth 5.4 with multipoint connection. Biggest trade-off: IPX4 only, so it handles sweat and light rain but not swimming, and the AI noise reduction is for calls only, not music playback.
• RELAXYO Swimming Bone Conduction — biggest strength: IP68 waterproofing plus 32GB of built-in MP3 storage, so you can swim with no phone anywhere nearby. Biggest trade-off: a 7-hour battery, no charging case, no LED display, and you must manually switch to MP3 mode before getting in the water.
• Pick Jacuate if you want one pair for commuting, running, cycling and calls, and hate charging things.
• Pick RELAXYO if the pool, the lake or heavy rain is the whole point of your purchase.
• One-line tiebreaker: dry-land daily driver → Jacuate. Water-first training tool → RELAXYO.
The Jacuate Open Ear Earbuds are built around one idea: keep your ears open and stay comfortable for hours. Each bud weighs only 6.5g and uses a hook shape that rests over the ear rather than inside it, made from lightweight ABS. There's no silicone plug jammed into your ear canal, so you keep hearing traffic, a bike bell, a colleague walking up behind you, or your own breathing on a long run. That's the real reason open-ear designs exist, and Jacuate leans all the way into it.
The spec sheet backs up the endurance angle. Jacuate rates the battery at a claimed 50 hours of playtime, and the charging case carries an LED display that shows the remaining power of each earbud and the case itself. In practice that means you can throw these in a bag, forget about them for a week of commuting and workouts, and still have a rough idea of what's left before you leave the house. The earbuds themselves are rated at 40 hours average battery life, and either way it's a much longer runway than most open-ear rivals. Bluetooth 5.4 with multipoint connection handles a phone and a laptop at the same time, and the 10-meter wireless range is standard for the class.
Sound and calls are where the design choices show. The driver is a dynamic speaker with 16 ohm impedance and a 20Hz–20,000Hz frequency range — a full-range tuning that will sound pleasant for podcasts, pop and audiobooks, though open-ear designs inherently leak bass because nothing seals your ear canal. For calls, Jacuate uses AI intelligent noise reduction to cut background noise, which is genuinely useful if you take meetings on a busy street. Be clear on the limit though: Jacuate's own notes say this is not active noise cancellation for music, so don't expect a cone of silence while listening.
Who should buy it: runners, cyclists, gym-goers, delivery riders and office workers who want background audio without blocking the world out, especially anyone who resents charging earbuds every night. The pink finish is a deliberate style choice rather than a neutral one, so factor that in. Who should skip it: swimmers, and anyone who wants deep, isolating bass or true noise cancellation. IPX4 means sweat and splashes are fine — laps in a pool are not.
The RELAXYO Swimming Bone Conduction headphones are a different animal entirely, and the name tells you why. This is a bone conduction design, meaning the driver vibrates against your cheekbone and sends sound to your inner ear through your skull rather than through the air into your ear canal. Your ears stay completely open. For runners and cyclists that's a safety feature; for swimmers it's the only way to hear anything at all underwater, since normal speakers and earbuds simply don't work when submerged.
The headline number is IP68. That's a much tougher waterproof rating than IPX4, and it's the reason these can be worn for swimming, surfing, running, fishing and hiking, including under a swim cap or goggles. The catch is a real one and RELAXYO states it plainly: you have to switch the headphones from Bluetooth mode to MP3 mode before you swim. Bluetooth doesn't travel through water, so the built-in 32GB of MP3 storage is what actually plays your music in the pool. That storage is the quiet hero of this product — 32GB holds thousands of tracks, and it means you can leave your phone in a locker, on the shore, or at home entirely.
The trade-offs are equally clear. Battery life is rated at 7 hours, which is decent for a swim session or a long run but a fraction of what the Jacuate offers. There's no charging case and no LED power display in the specs, so you're charging the headband itself and checking status the old-fashioned way. There's also no noise control of any kind, and bone conduction sound is inherently thinner on bass than a dynamic driver — that's physics, not a flaw in this particular model. Bluetooth 5.4 keeps the wireless side current, and there's no headphone jack, so wired listening isn't an option.
Who should buy it: swimmers first and foremost, plus triathletes, open-water swimmers, surfers, and anyone who trains in serious rain or sweat and wants their audio to survive it. If you've ever killed a pair of earbuds in a pool, this is the category that fixes that. Who should skip it: anyone who mostly listens indoors, wants rich bass, or wants to set it and forget it for a week without charging. Seven hours means a nightly or every-other-night habit.
Side-by-Side: Which Should You Choose?
• Best for battery life → Jacuate Open Ear Earbuds. A claimed 50 hours with a case-mounted LED display versus 7 hours on a bare headband.
• Best for phone-free workouts → RELAXYO. The 32GB MP3 player means no phone, no signal, no problem in the pool.
• Best for all-day wear and calls → Jacuate. At 6.5g per bud with AI call noise reduction and multipoint Bluetooth 5.4, it's designed for a full working day.
• Best for awareness while running or cycling → a tie, for different reasons. Jacuate keeps your ears open by design; RELAXYO keeps them open by bone conduction. Both let traffic through.
• Best for bass and fuller sound → Jacuate. A 16 ohm dynamic driver with a 20Hz–20,000Hz range will generally out-punch a bone conduction driver.
• Best for charging convenience → Jacuate. A wireless charging case with a power display beats plugging in a headband every night.
• Best for durability in sweat, rain and surf → RELAXYO. IP68 is the rating you want if water is a regular part of your training.
If I had to pick one for myself, I'd buy the Jacuate Open Ear Earbuds. My reasoning is simple: most people's audio life happens on dry land — commutes, runs, calls, the gym — and Jacuate covers far more of those hours with a 50-hour battery, a case that shows its charge, multipoint Bluetooth 5.4 and a lighter, more comfortable open-ear fit. The only scenario where I'd switch is if swimming is genuinely central to how you train. In that case the RELAXYO's IP68 rating and 32GB of built-in storage make it the only one of the two that actually does the job — and no amount of battery life compensates for a pair of headphones that can't get wet. Check the current price on Amazon before you commit, since that's the one variable that could flip this decision.
FAQ
Yes — that's their standout feature. They hold 32GB of built-in MP3 storage, so you can load music and swim or run with no phone nearby. Just remember to switch from Bluetooth mode to MP3 mode before you get in the water.
Bone conduction drivers sit against your cheekbone rather than in your ear, so bass is naturally lighter than on a standard dynamic driver like the one in the Jacuate. Expect clear vocals and good awareness, not thumping low end.
Jacuate, in my opinion. It's the only one of the two with AI intelligent call noise reduction, and it also supports multipoint connection for switching between phone and laptop. RELAXYO's specs list no noise control at all, and its bone conduction design is built for training rather than meetings.
RELAXYO is rated at 7 hours per charge, so plan on charging it regularly — especially before a long swim. Jacuate claims up to 50 hours of playtime with the charging case, and its LED display shows the remaining power of both the earbuds and the case, so you'll rarely be caught out.
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