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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 pair of cycling earbuds you can also wear straight into the pool and that carry their own music library without a phone, choose RELAXYO Bone Conduction Swimming; if you need open-ear headphones built around a swappable battery so you never sit out a long ride waiting on a charge, choose OceanSounds Open Ear Headphones.
• RELAXYO Bone Conduction Swimming — biggest strength: an IP68 waterproof build with 32GB of onboard storage and a bone conduction driver, so you can swim, ride in the rain, or run without a phone and still hear your surroundings.
• RELAXYO Bone Conduction Swimming — biggest trade-off: the audio sits on your cheekbones rather than in your ears, so bass and isolation are limited, and Bluetooth has to be switched off in favor of MP3 mode once you're underwater.
• OceanSounds Open Ear Headphones — biggest strength: a swappable battery design (two magnetic replaceable modules plus a charging case) that lets you keep listening through the longest rides and workouts without a charging break.
• OceanSounds Open Ear Headphones — biggest trade-off: no water-resistance rating is listed, so I'd treat them as sweat-and-weather-tolerant at best rather than swim-ready, and there's no built-in storage — they always need a paired phone.
• Who each pick is for: RELAXYO for the swimmer-cyclist-runner who wants one rugged, phone-free pair; OceanSounds for the road cyclist, commuter or gym-goer who wants all-day open-ear audio and hates waiting on a charger.
The RELAXYO Bone Conduction Swimming is, on paper, the more specialized of the two. Its headline feature is the IP68 waterproof rating, which the spec sheet frames around sweat, rain, swimming, surfing, running, fishing and hiking. That's a genuinely wide envelope for a pair of cycling earbuds — a downpour on a ride or a sweaty climb is squarely inside it. The catch is that Bluetooth doesn't travel through water, so the brand's own guidance is to flip the headphones into MP3 mode before you submerge them. Bone conduction also means nothing sits inside your ear canal, and the open-ear layout is the whole point: on a bike, you keep traffic noise and your surroundings audible.
The second pillar is the 32GB of built-in memory, which the sheet equates to roughly 7,000 songs. That matters more than it sounds. On a long ride or a pool session you can leave the phone at home entirely, load tracks over the included magnetic charging cable, and double-press the power button to hop between Bluetooth and MP3 modes. Bluetooth 5.4 handles the wireless side with a stated range of about ten meters, and the battery is quoted at 1.5 hours to charge and up to 7 hours of playback — enough for a serious training block, though you'll want to top it up before an all-day outing.
Comfort is built around a lightweight memory titanium frame that bends and conforms to the ear's natural shape, and the controls are deliberately simple: three buttons covering power, play/pause, calls, volume and track skipping. In my opinion, this is the pair to buy if your training genuinely mixes water and wheels. Skip it if you want deep, sealed-in bass or active noise cancellation — there's none listed — or if you'd rather not think about mode switching at all. The beige titanium finish and over-ear placement also make it a fairly visible piece of kit, which is a fair trade for the open-ear safety argument.
The OceanSounds Open Ear Headphones take the opposite approach: instead of surviving the water, they try to outlast your schedule. The swappable battery is the centerpiece — the box includes two magnetic replaceable battery modules plus a charging case, and the design lets you swap a depleted module in seconds rather than parking the headphones on a cable. For a cyclist doing back-to-back rides, a commuter who forgets to charge, or someone at the gym for two hours, that's a practical answer to the one thing that kills open-ear headphones mid-session.
The rest of the package is aimed at the same active buyer. Bluetooth 5.4 covers pairing and low-latency audio across phone, tablet and laptop. The ear-hook fit is described as lightweight and ergonomic, intended to stay put through running, cycling, hiking and gym work — and the non-in-ear structure is pitched at reducing ear fatigue and pressure over long wear. The open-ear design keeps traffic, conversations and ambient sound audible, which is exactly what you want on a bike lane or a shared path.
Side-by-Side: Which Should You Choose?
• Best for swimming → RELAXYO Bone Conduction Swimming. IP68 waterproofing plus an MP3 mode is the only configuration here that's actually meant to go underwater.
• Best for battery flexibility → OceanSounds Open Ear Headphones. Two swappable battery modules and a charging case beat a fixed 7-hour cell when you can't stop to plug in.
• Best for phone-free rides → RELAXYO Bone Conduction Swimming. 32GB of storage (about 7,000 songs) means no handset required.
• Best for all-day land use → OceanSounds Open Ear Headphones. A non-in-ear, fatigue-reducing design and instant battery swaps suit long days better than a 7-hour fixed battery.
• Best for wet-weather riding → RELAXYO Bone Conduction Swimming. IP68 covers rain and sweat explicitly; OceanSounds lists no water rating.
• Best for simple controls → RELAXYO Bone Conduction Swimming. Three buttons handle power, playback, calls, volume and mode switching.
• Best for fit security on rough roads → OceanSounds Open Ear Headphones. The ear-hook design is purpose-built to stay put through cycling, running and gym sessions.
• Best for mixed cycling and swimming training → RELAXYO Bone Conduction Swimming. One pair covers both, which is the whole point of its spec sheet.
• Best for warranty peace of mind → OceanSounds Open Ear Headphones. A 360-day warranty versus 1 year on the RELAXYO — effectively similar, but worth knowing before you buy. Check the current price on Amazon for both, since that's the variable a spec sheet can't answer.
If I were buying one pair as cycling earbuds and nothing else, I'd take the OceanSounds Open Ear Headphones, because the swappable battery removes the single most annoying failure mode on a long ride — running out of power — and the ear-hook fit is clearly designed for exactly that kind of movement. But if your training genuinely crosses into water, my recommendation flips hard to the RELAXYO Bone Conduction Swimming: IP68 waterproofing, 32GB of onboard music and bone conduction you can wear under a swim cap make it the only one of the two that does both jobs. Land-only rider? OceanSounds. Swimmer who also rides? RELAXYO.
Yes — it carries an IP68 rating and the brand positions it for swimming, surfing and running. The one thing to remember is that Bluetooth doesn't transmit underwater, so you need to switch to MP3 mode and play from the 32GB of built-in storage.
The spec sheet lists no water-resistance rating, so I wouldn't swim in them. Sweat and light rain during cycling, running or gym work are the realistic use cases, and even then I'd dry them off afterwards.
With the RELAXYO you don't — 32GB of storage (roughly 7,000 songs) lets you ride phone-free in MP3 mode, and Bluetooth 5.4 covers you when you do want a connection. The OceanSounds have no onboard storage, so they always need a paired Bluetooth device.
RELAXYO quotes 1.5 hours to charge and up to 7 hours of playback. OceanSounds doesn't publish a runtime figure, but its two magnetic replaceable battery modules and charging case are designed to keep you going without a wall socket — that swap system is its main advantage.
Value depends on your use case rather than a spec line: RELAXYO buys you waterproofing plus a 32GB music library, while OceanSounds buys you battery flexibility and an ear-hook fit. Check the current price on Amazon for both before deciding.
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See also: POPUX Bone Conduction Headphones vs NUPLEA Open Ear Bone, Wigfar Open Ear Headphones vs MONMZ Bone Conduction, Hyggey Havik Bone Conduction Headphones vs EEXXYZ Open Ear Earbuds