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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 lightweight everyday open-ear pair with an adjustable bone conduction fit and a clearer all-day comfort story, choose Raycon Bone Conduction Headphones; if you need built-in music storage for swimming and phone-free workouts, choose Aiwa.
• Raycon's biggest strength: an adjustable bone conduction design (slide the buds in for louder sound, pull them back for more awareness), a 13-hour battery, and an IP68 rating in a featherlight, ergonomic frame built for extended wear.
• Raycon's biggest trade-off: no onboard storage and no waterproof-swimming claim — it's Bluetooth-only, so it's tethered to your phone and aimed at running and general use rather than lap swimming.
• Aiwa's biggest strength: a built-in 8GB MP3 player that holds roughly 2,000 songs, so you can swim or train with zero phone and zero Bluetooth connection.
• Aiwa's biggest trade-off: a shorter 12-hour battery and a bulkier "around the head" fit versus Raycon's lighter, slide-adjustable buds.
• Choose Raycon if you want all-day comfort, awareness, and a phone-connected soundtrack for running, commuting, and gym sessions.
• Choose Aiwa if you want to leave your phone in the locker and take your music underwater.
Raycon's take on bone conduction is built around the everyday listener who wants their ears open. The driver vibrates against your cheekbone instead of pushing sound into your ear canal, so nothing plugs you up and nothing gets sweaty inside your ear. That's the whole pitch: clear, balanced sound without the pressure and fatigue that comes from jamming earbuds in for hours. It's a genuinely different way to listen, and it suits people who find in-ear buds irritating.
The standout feature here is adjustability. You can slide the earbuds closer to your cheek for more volume, or pull them back to let more of the world in. That single mechanical tweak is what separates it from fixed-position bone conduction sets — you're not stuck with one loudness-to-awareness ratio. Pair that with an IP68 rating, and rain, sweat, and spills stop being a reason to take them off. The Bluetooth 5.3 connection reaches about 33 feet, so you can set your phone down and still roam a room.
Who should skip it? Swimmers. There's no built-in memory and no phone-free mode, so pool laps are out unless you keep a device nearby — and the IP68 rating is about surviving water, not playing music without a source. If your workouts happen underwater, this isn't the pick. If your priority is comfort and awareness on land, it is. Check the current price on Amazon before you commit, since that varies.
Aiwa: Who It's For
Aiwa's Prodigy Swim is aimed at a narrower, more specific buyer: the swimmer or phone-free athlete. The headline feature is the built-in 8GB of MP3 storage. Load up to about 2,000 songs onto the headset itself, leave your phone in the bag, and swim or train with nothing but the headphones on your head. That's a real problem-solver — Bluetooth doesn't travel through water, so a phone-free mode isn't a gimmick here, it's the entire point.
The audio side is true bone conduction, same core idea as Raycon: drivers vibrate to deliver sound while your ears stay open to ambient noise. The IP68 waterproof rating means it can be fully submerged, and it resists sweat, dust, and rain, so pool sessions, open-water swims, and sweaty outdoor training are all fair game. Battery life is rated at up to 12 hours of continuous use.
The fit is open-ear and designed to rest securely around your head and ears — a more enveloping, wrap-around style than Raycon's hook design. Aiwa describes it as lightweight and ergonomic for all-day comfort, and that wrap style is typically what keeps a headset planted during turns and strokes.
Who should buy it? Swimmers first, then anyone doing heavy, sweat-soaked training who wants to ditch the phone. If you've ever wished your headphones worked without a Bluetooth connection, this is the one to look at. Who should skip it? Anyone who mainly wants the lightest possible all-day wear or who relies on a phone for calls, podcasts, and streaming — this one's built around offline stored music, so it's less convenient for a connected, streaming-first routine.
• Best for swimming → Aiwa: IP68 plus 8GB of onboard storage means it works in the water without a phone.
• Best for all-day comfort and lightness → Raycon: a featherlight frame with a slide-adjustable fit made for extended wear.
• Best for phone-free workouts → Aiwa: store up to 2,000 songs and leave your device behind.
• Best for awareness while running or commuting → Raycon: open-ear design plus the pull-back adjustment to let more surroundings in.
• Best for battery life → Raycon: up to 13 hours versus Aiwa's 12.
• Best for streaming and calls → Raycon: Bluetooth 5.3 with roughly 33 feet of range keeps you connected to your phone.
• Best for controlling your own loudness → Raycon: slide the buds in for more sound, out for more awareness.
• Best for a wrap-around, secure fit → Aiwa: an open-ear design that rests around the head and ears.
In my opinion, the Raycon Bone Conduction Headphones are the better buy for most people. The adjustable bone conduction buds, 13-hour battery, IP68 rating, and Bluetooth 5.3 make them flexible enough to cover running, commuting, the gym, and everyday listening — a wider slice of real life than a swim-focused set. I'd only steer you to the Aiwa if swimming or truly phone-free training is your main goal, because the 8GB of built-in storage is something Raycon simply doesn't offer. If your workouts happen in a pool, buy the Aiwa. If they happen everywhere else, buy the Raycon.
FAQ
how to bone conduction headphones work
They vibrate against the bone in front of your ear and send sound straight to your inner ear, bypassing the ear canal. That's why both of these leave your ears completely open. Raycon and Aiwa both use bone conduction drivers, so you hear your audio while ambient noise still gets in.
Rest the transducers on your cheekbones just in front of your ears, with the band or hooks wrapping behind your head. Raycon's earbuds slide closer for more volume or pull back for more awareness. Aiwa's open-ear design rests around your head and ears for a secure fit during swimming and running.
how to use bone conduction headphones
Pair over Bluetooth 5.3 for phone-connected listening, or on the Aiwa, load songs onto the built-in 8GB of storage for phone-free playback. Raycon is Bluetooth-only, so it needs a paired device. Both use touch and button controls on the headset to change tracks and volume.
Only if they're built for it. The Aiwa Prodigy Swim has an IP68 rating and can be fully submerged, and its onboard storage lets you swim without a phone. Raycon is also IP68-rated against rain, sweat, and spills, but it's Bluetooth-only, so it's aimed at land training rather than lap swimming.
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