We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 7 min read · Independent comparison
If you want a comfortable, durable, kid-safe pair of headphones for toddlers and young children — for flights, school, sleep and everyday listening — choose Bandou 3.0; if you need a fully waterproof, open-ear set that keeps playing music while you are actually in the water, choose SAMVEK Swimming Headphones Underwater.
• Bandou 3.0 biggest strength: a soft fleece over-ear/headband design built for kids, with a built-in volume limiter, 35 hours of battery, and the option to run wired over a 3.5 mm jack when Bluetooth is not ideal.
• Bandou 3.0 biggest trade-off: it is a children's headphone, not a waterproof one — there is no IP rating here, so it is a dry-land and cabin product, not a pool product.
• SAMVEK Swimming Headphones Underwater biggest strength: IP68 waterproofing plus a built-in 32GB MP3 player, which lets it keep playing music underwater where Bluetooth cannot reach.
• SAMVEK Swimming Headphones Underwater biggest trade-off: battery life is 8 hours, there is no 3.5 mm jack, and Bluetooth simply does not work underwater — you have to switch modes to listen while swimming.
• Bandou 3.0 is for: parents buying for toddlers and young kids who need comfort, safety limits and travel convenience.
• SAMVEK Swimming Headphones Underwater is for: adult swimmers, snorkelers and open-water athletes who want music in the water.
Bandou 3.0 is, quite simply, a kids' headphone designed around the way small children actually use audio gear. Instead of rigid plastic cups that press on the skull, it uses a soft fleece over-ear headband that a toddler can lie down on without discomfort. That single design decision changes everything about the use case: this is a pair of headphones a child can fall asleep in, which is exactly what you want on a long flight or a car ride.
The feature set backs that up. There is a built-in volume limiter so the maximum loudness stays at a level that is safe for young ears — a parent-facing feature, not a kid-facing one, and the reason I would hand these to a four-year-old without hovering. Battery life is rated at 35 hours, and a full charge takes about 2–3 hours over the included USB-C cable. Because the speakers sit flat and very close to the ear, the sound stays intelligible even against cabin noise, which matters when you are trying to keep a child entertained on a plane.
Buy it if you are a parent or grandparent shopping for a toddler or young child and want comfort, a safe volume ceiling, easy travel connectivity and something that survives being sat on. Skip it if you are an adult looking for sport headphones, or if you want to wear headphones in or near water — Bandou 3.0 has no waterproofing claim and is not built for that.
SAMVEK Swimming Headphones Underwater: Who It's For
SAMVEK Swimming Headphones Underwater is a very different animal, and it is aimed at a very different person. This is an adult open-ear, bone-conduction headphone with an IP68 waterproof rating that the manufacturer says withstands full immersion down to about 2 metres. If you swim laps, snorkel, fish or boat, that rating is the whole point of the product.
The clever part is how it handles the underwater problem. Bluetooth signals do not travel through water, and SAMVEK is upfront about that: you cannot stream from your phone while submerged. The workaround is a built-in 32GB MP3 player that holds thousands of tracks in formats like MP3, WMA, WAV, APE and FLAC. You load files by connecting the headphones to a computer with the magnetic charging cable, where it shows up as a drive you can drag music onto. Then, in the water, you double-click the power button to switch into MP3 mode and swim with your own playlist. On dry land, it flips back to Bluetooth and works like a normal open-ear sports headphone, with a stated range of about 33 feet.
Bone conduction also means the drivers sit outside your ear canal rather than inside it. That keeps your ears open and aware of your surroundings — useful when cycling or running near traffic — and it avoids the muffled, plugged-up feeling of in-ear buds. The whole unit weighs around 30 grams, which is light enough to wear for an extended session, and the 200mAh battery gives roughly 8 hours of playback or talk time after a 2-hour charge. Controls are handled by simple physical buttons for play, pause, track skipping and calls.
Buy it if you are an adult swimmer or outdoor athlete who wants music during laps or open-water sessions and does not mind managing a local music library to get it. Skip it if you want headphones for a child, want a wired option — there is no 3.5 mm jack here — or expect Bluetooth to work underwater.
Side-by-Side: Which Should You Choose?
• Best for swimming and water sports → SAMVEK Swimming Headphones Underwater. IP68 waterproofing and an onboard MP3 player are the only way to get audio underwater.
• Best for battery life → Bandou 3.0. It is rated at 35 hours versus 8 hours on the SAMVEK.
• Best for flights and travel with a child → Bandou 3.0. The included 3.5 mm AUX cable plugs directly into in-flight entertainment.
• Best for running, cycling and staying aware of traffic → SAMVEK Swimming Headphones Underwater. The open-ear bone-conduction design and 30-gram weight suit outdoor training.
• Best for listeners who want zero setup → Bandou 3.0. Pair over Bluetooth and go; the SAMVEK asks you to load music onto it first for underwater use.
• Best for wearers who dislike things inside the ear canal → SAMVEK Swimming Headphones Underwater. Bone conduction leaves the canal completely open.
• Best for a household with both a young child and an adult swimmer → buy both. These two barely overlap; they solve genuinely different problems.
In my opinion, most people searching this comparison are parents, and for parents the answer is Bandou 3.0. The volume limiter, the lie-down-comfortable fleece headband, the 35-hour battery and the AUX cable for airplanes add up to a product that fits real family travel and everyday listening with almost no friction. The SAMVEK is genuinely impressive at what it does — IP68 plus a 32GB player is exactly the right answer for underwater audio — but it is an adult swimming tool, not a kids' headphone, and it asks you to prepare a music library before it shines. If you swim laps, buy the SAMVEK. If you are buying for a child, buy the Bandou 3.0. Check the current price on Amazon before you commit, since that is the one thing that can tip a close call.
FAQ
No, and SAMVEK says so directly. Bluetooth does not transmit through water, so you have to double-click the power button to switch into MP3 mode and play music stored in the built-in 32GB memory instead.
Bandou 3.0 is rated at 35 hours of playback and charges in roughly 2–3 hours. SAMVEK Swimming Headphones Underwater uses a 200mAh battery rated at about 8 hours of playback or talk time after a 2-hour charge.
Bandou 3.0, without much debate. The volume limiter protects young ears, the soft headband lets a child sleep against it, and the included 3.5 mm cable connects straight to the seatback entertainment system. The SAMVEK is an adult open-ear sport headphone with no volume limiter and no wired connection.
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