How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a headset you can actually wear in the pool with music stored on the device itself, choose Aiwa; if you need an everyday open-ear set for running, workouts and even falling asleep, choose Hamwesh Bone Conduction Headphones.
• Aiwa's biggest strength: a true IP68 waterproof rating plus 8GB of built-in MP3 storage, so you can swim and train with music and no phone nearby.
• Aiwa's biggest trade-off: the design is built around water and sport first, so it's a dedicated training tool rather than a general-purpose, do-everything headset.
• Hamwesh's biggest strength: a lightweight ergonomic wraparound frame with an IPX8 rating and a white noise sleep mode — it's made to stay comfortable far beyond a single workout.
• Hamwesh's biggest trade-off: the manufacturer explicitly states it is not suitable for swimming, and it's a Bluetooth-only design with no onboard music storage.
• Pick Aiwa if your priority is swimming and phone-free training. Pick Hamwesh if you want one comfortable open-ear headset for running, the gym, podcasts and sleep.
The Aiwa Prodigy Swim is the more specialised of the two. Its headline feature is genuine bone conduction audio paired with an IP68 rating — meaning it's built to be fully submerged and to shrug off sweat, dust and rain. That's a step beyond "sweat-resistant": this is a headset designed around water as a normal part of the session, not an accident to be survived.
The second half of the Aiwa story is the 8GB of built-in MP3 storage. The spec sheet puts that at room for roughly 2,000 songs loaded directly onto the device. That matters more than it first sounds. Pool water blocks Bluetooth, so swimmers usually can't stream from a phone at all — onboard storage is what makes underwater listening work. The same logic applies to anyone training somewhere they'd rather not carry a phone.
Battery is rated at up to 12 hours of continuous playback, which comfortably covers long sessions, and the open-ear fit sits around the head and ears rather than inside them, so ambient sound stays audible. Aiwa also lists active noise cancellation with touch controls, a 20Hz–20,000Hz frequency range and a plastic/rubber/silicone build in yellow.
Buy it if you swim, you want music without a phone, and you need a headset that treats water as a feature rather than a risk. Skip it if you mainly want something to wear to bed or for casual all-day listening — that's simply not what it was designed around.
Hamwesh takes the opposite approach: instead of chasing the pool, it chases comfort and versatility. The description leads with a lightweight ergonomic wraparound frame intended for extended wear "during exercise, sleep or daily use," with a secure fit that avoids pressure points. That's a design brief written for hours, not laps.
It carries an IPX8 rating — strong against sweat and demanding conditions — but Hamwesh is refreshingly direct about the limit: it is not suitable for swimming. So treat it as a seriously sweat-proof and rain-tolerant headset, not a swim headset. That distinction is the single most important thing to understand before choosing between these two.
The other standout is the white noise sleep mode, with built-in sounds including bird songs, waves and raindrops. Combined with the wraparound fit, this is clearly pitched at people who want to wear headphones while resting or falling asleep — a use case most sport headsets ignore entirely.
On the technical side, Hamwesh lists Bluetooth 5.3 with a wireless range of roughly 10–15 metres in open air, a 300mAh battery rated at about 6–12 hours of playback, and a charging time of around 3 hours via magnetic cable. There's no onboard music storage here, so it's a Bluetooth-first device. It ships with an elastic band, a magnetic charging cable and a manual, and carries a 90-day manufacturer warranty.
Buy it if you want one comfortable open-ear headset for running, workouts, commuting, calls and winding down at night. Skip it if swimming is on your list, or if you need music without a phone.
Side-by-Side: Which Should You Choose?
• Best for phone-free listening → Aiwa. The 8GB MP3 storage holds roughly 2,000 songs with no Bluetooth required.
• Best for all-day comfort → Hamwesh. The lightweight ergonomic wraparound frame is explicitly designed for extended wear.
• Best for sleep and winding down → Hamwesh. The white noise mode with bird songs, waves and raindrops is unique to it.
• Best for sweat-heavy gym and running sessions → Hamwesh. IPX8 plus a secure, pressure-point-free fit suits long, sweaty workouts.
• Best waterproof-versus-sweatproof clarity → Hamwesh. It states its limits plainly, which helps you avoid a costly mistake.
• Best for situational awareness → both. Open-ear bone conduction keeps you alert to traffic and surroundings on either model.
• Worth checking before you decide → the current price on Amazon. Both are spec-rich designs, so weigh the features you'll actually use against what each costs today.
In my opinion, the right pick comes down to one question: will this headset ever get wet on purpose? If yes — swimming, laps, open-water training — I'd buy the Aiwa Prodigy Swim. IP68 plus 8GB of onboard music is a genuinely rare combination, and it solves a problem Bluetooth simply can't solve in water. If swimming isn't part of your routine, I'd buy the Hamwesh Bone Conduction Headphones instead. It's more comfortable for long wear, adds a sleep-focused white noise mode, and its honest IPX8 "not for swimming" labelling means you know exactly what you're getting. Neither is universally better — they're built for different jobs.
FAQ
Yes. The Aiwa carries an IP68 rating and is designed to be fully submerged, while Hamwesh states its headset is not suitable for swimming despite its IPX8 rating. For pool or open-water use, Aiwa is the one built for it.
No. Hamwesh is a Bluetooth 5.3 headset with no onboard storage, so you need a paired device to play audio. The Aiwa, by contrast, has 8GB of built-in MP3 storage for phone-free listening.
Hamwesh. Its lightweight ergonomic wraparound frame is designed for extended wear and it includes a white noise sleep mode. Aiwa's open-ear fit is comfortable for training, but it's aimed at sport rather than resting.
Both are rated at up to 12 hours of playback. Aiwa lists 12 hours of continuous use; Hamwesh lists approximately 6–12 hours from its 300mAh battery, with roughly a 3-hour charge time.
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See also: Bandou 3.0 vs Arciea Bone Conduction Headphones, HIFI WALKER Bone Conduction Headphones vs Jacuate Open Ear Earbuds, MUSICOZY Sleep Headphones vs MUXUN Bone Conduction Headphones