We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 8 min read · Independent comparison
I keep coming back to the Niecase Swimming Headphones Underwater as my top pick, because it pairs a genuinely submersible IP68 build with an 8GB onboard MP3 player, so you can leave the phone on the pool deck and still have music for a full session. Bone conduction keeps your ears open, and the spec sheet lines up neatly with how swimmers actually use these things.
• Niecase Swimming Headphones Underwater — best for lap swimmers who want a do-everything pair; pick this if you want IP68 submersibility, an 8GB MP3 player, Bluetooth 6.2 for dry-land use, and the lightest frame of the group at 28g.
• esonstyle Swimming Headphones Underwater — best for swimmers who want the same core formula in a brighter color; pick this if you want IP68, 8GB of storage, 8 hours of battery and a 2-hour charge time, and you don't need the newest Bluetooth version.
• SAMVEK Swimming Headphones Underwater — best for people with a big local music library; pick this if 32GB of storage and multi-device Bluetooth pairing matter more to you than a long warranty.
• KOPIDOE Swimming Headphones Underwater — best for swimmers who wear a cap or hat; pick this if you want 32GB of storage, an adjustable headband, dual-device pairing and a magnetic charging port.
This is an open-ear bone conduction headphone built around one idea: you should be able to swim without your phone. The IP68 rating means it's designed to survive full submersion — the spec sheet puts that at depths up to 3 meters for 60+ minutes — so laps, surf, kayaking and heavy rain are all inside its comfort zone. Sound travels through your cheekbones rather than into your ear canals, which is why your ears stay open and you keep hearing the pool around you.
The 8GB of built-in memory holds roughly 2,000 songs, and you load them over a magnetic cable from a computer. That matters more than it sounds. Underwater, Bluetooth simply doesn't carry, so the MP3 mode is the mode you'll actually live in while swimming; the Bluetooth 6.2 radio is there for everything else — runs, rides, calls, and streaming from your phone when you're dry. Battery life is rated at 8 hours, which covers multiple swim sessions between charges.
The frame is titanium and listed at 28g, which is the lightest of the four here, and it comes with an adjustable strap and earplugs in the box. In my opinion that combination — light, flexible, open-ear — is what keeps these comfortable through flip turns and long sets rather than something you're constantly re-seating.
The trade-off is honest and worth stating plainly: the audio is bone conduction, so it won't have the bass weight or isolation of in-ear buds, and there's no noise control at all. And you have to remember to double-check you're in MP3 mode before you get in the water. If you want thumping, sealed-off sound, this isn't the design for you. If you want music while swimming plus awareness of your surroundings, it is. Niecase backs it with a 2-year warranty, the longest of the group.
The esonstyle is the closest sibling to my top pick, and the spec sheet reads almost like a mirror: IP68 protection rated to the same 3 meters for 60+ minutes, 8GB of storage for around 2,000 songs, bone conduction drivers, 8 hours of playback, a 28g titanium frame, and the same 8-ohm impedance, 20kHz frequency response and 119dB sensitivity. If you like the sound of the Niecase formula but want it in orange, this is the obvious alternative.
Where it differs is the details. Bluetooth is version 6.0 rather than 6.2, and the sheet lists a 2-hour charge time, which is the number worth knowing if you're planning back-to-back swim days — you'll want to plug it in the night before. The mode switching is a double-click of the MFB button between Bluetooth and MP3, and pressing that button three times in MP3 mode flips you into shuffle, which is a genuinely nice touch for lap swimming where you don't want to think about track order.
Day to day, this is a swim-bag headphone: strap it on with your goggles and earplugs, keep your phone in the locker, and go. The open-ear design means you'll still hear lane mates and whistles, and the ABS enclosure plus flexible frame is built for sweat and repeated dunks.
The trade-off again is the format itself — no noise cancellation, no ear canal seal, and underwater you're locked to MP3 mode. It also carries the same 2-year warranty as the Niecase, so the choice between them comes down to color and Bluetooth version rather than durability. If orange is easier to spot in a crowded swim bag, that's a legitimate reason to pick it.
The SAMVEK takes a different angle: storage. It carries 32GB of built-in memory, which the sheet describes as room for up to 8,000 songs and support for MP3, WMA, WAV, APE and FLAC files. If you've ripped a CD collection or bought lossless downloads over the years, that's the most interesting number on this list — you can carry the whole library to the pool and never touch a streaming app.
The rest of the package is sensibly specced for water. IP68 waterproofing covers swimming and snorkeling, and it's designed to be worn with a swim cap, goggles and earplugs. Bluetooth 5.4 handles the dry-land side with a listed range of 10 meters and multi-device pairing, so you can hop between a phone and a laptop without re-pairing. It weighs 30g and uses an open-ear bone conduction driver, and it ships with a retractable headband and a 2-hour charge time.
One thing to read carefully: the description mentions full immersion up to 2 meters rather than the 3 meters the other models claim, so if you're a diver rather than a lap swimmer, this is the more conservative option. It also lists a 2.5mm jack in the connectivity fields, which is unusual on a wireless swimming headphone — treat the wireless mode as the feature that matters here.
The real trade-off is warranty and Bluetooth generation. It's a 1-year warranty against the 2 years on the Niecase and esonstyle, and Bluetooth 5.4 versus 6.x is a step behind on paper. In my opinion, though, if your priority is holding a huge offline library and pairing to multiple devices, the storage advantage outweighs both.
This one is aimed at a specific swimmer: someone who wears a cap or a hat and has struggled to get a headband to sit right. The KOPIDOE's headband is fully adjustable and the sheet explicitly says it's compatible with swim caps and hats, which is a small detail that makes a real difference if you're the type who can't swim without a cap. The enclosure is silicone rather than hard ABS, and it weighs 4.8 ounces.
Storage is the other headline: 32GB built in, which the sheet describes as capacity for over 80,000 songs — a figure I'd treat as marketing arithmetic, but the practical takeaway holds, which is that you won't run out of room. It switches to MP3 mode for underwater listening just like the rest, and it pairs with two devices at once over Bluetooth 6.0 so you don't miss a call while your phone sits poolside.
Charging uses a magnetic port, which is the right call for a swimming headphone — fewer exposed contacts to corrode, and it's harder to yank loose. The open-ear bone conduction design keeps your ear canals free and your awareness intact, and it ships with a magnetic charging cable, a pair of earbuds, a headband adjustment strap and a manual.
Trade-offs: it's the heaviest of the four at 4.8 ounces, and it carries a 1-year warranty rather than 2. The sheet also doesn't publish a battery-hour figure or a waterproof depth, so if you need a stated runtime before you buy, the other three give you more to go on. It's a strong fit for cap-wearers and dual-device users; less so if you want every number spelled out.
How We Picked
No. Every model here states the same thing: Bluetooth doesn't transmit through water, so you must switch to MP3 mode before swimming. Bluetooth is for dry-land use — running, cycling, calls and streaming when your phone is nearby.
You connect them to a computer with the included cable and copy audio files straight onto the built-in memory — 8GB on the Niecase and esonstyle, 32GB on the SAMVEK and KOPIDOE. No app or subscription is required.
They sound different. Because they transmit through your cheekbones and leave your ear canals open, you get less bass and no isolation — but you keep full awareness of traffic, lane mates and poolside announcements, which is the whole point for swimming and outdoor sport.
They're rated IP68, and the Niecase and esonstyle sheets state submersion to 3 meters for 60+ minutes while the SAMVEK description states up to 2 meters. Salt water still demands a fresh-water rinse afterwards, and I'd follow each brand's stated depth limit rather than pushing past it.
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