If you want open-ear listening with a flexible fit for a big head, choose PSIER Bone Conduction Headphones; if you need waterproof audio for swimming, choose SAMVEK Swimming Headphones. PSIER’s adjustable strap and memory-titanium frame make it the more tailored fit choice, while SAMVEK adds IP68 water protection and built-in music storage for listening without Bluetooth underwater.
• PSIER’s biggest strength: an adjustable strap and flexible frame, with open-ear listening for workouts and outdoor use. Trade-off: it has no built-in music storage or stated waterproof rating.
• SAMVEK’s biggest strength: IP68 waterproofing and 32GB of built-in storage for swimming in MP3 mode. Trade-off: Bluetooth does not work underwater, so swimming audio must be stored on the headphones.
• Choose PSIER if you want a configurable fit and low-latency Bluetooth for gym sessions, running, or outdoor listening.
• Choose SAMVEK if you want to listen while swimming or prefer onboard music storage when your phone is not nearby.
• Both use an open-ear bone-conduction design, but their strongest use cases are different: everyday active listening for PSIER, and water-based listening for SAMVEK.
PSIER is the more fit-focused option here. Its flexible memory-titanium frame is designed to contour around the wearer without squeezing, and an included adjustable strap provides another way to customize how it sits. That combination makes PSIER worth considering if standard sports headphones tend to feel too tight or awkward on your head. For someone searching for bluetooth earbuds for big head, the important detail is not a stated head measurement—it is the presence of an adjustable strap and a flexible frame. The sheet does not give a specific fit range, so I would not assume every wearer will get the same result.
The open-ear design leaves the ear canal unobstructed, which can be useful during a run, a gym workout, or an outdoor walk when awareness of nearby sounds matters. PSIER uses a 13 mm bone-conduction driver and lists Bluetooth 6.0, a connection range of up to 33 feet, and 60 ms latency. In practical terms, that short stated latency may appeal to someone watching video or following timed workout content over Bluetooth. It does not mean the headphones eliminate delay in every device or app, but it is a concrete feature to weigh if responsiveness matters.
PSIER’s trade-off is that its listed strengths center on fit, open-ear listening, and Bluetooth use. It may suit a buyer who wants music from a nearby phone while exercising, but not someone who needs stored audio for underwater use.
Who should skip PSIER: Skip it if your main requirement is a stated waterproof rating or built-in music storage for swimming.
SAMVEK’s defining feature is its IP68 waterproof rating, making it the clear match for a buyer who wants headphones intended for swimming and other wet activities. The supplied description says the headphones can be used underwater up to 2 meters deep. It also makes an important distinction: Bluetooth is not supported underwater. To listen while swimming, you need to switch to MP3 mode and use audio stored on the headphones. That mode change is central to the buying decision, not a minor setting.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-18 · 8 min read · Independent comparison
The built-in 32GB memory gives SAMVEK a way to play audio without a phone connection nearby. The listed supported formats include MP3, WMA, WAV, APE, and FLAC, and the product information describes transferring audio from a computer using the magnetic charging cable. That makes SAMVEK useful for pool sessions where carrying a phone is impractical. Its multifunction button controls include playback navigation and call handling, while Bluetooth mode is available for listening and calls on land. The listed Bluetooth range is up to 33 feet.
SAMVEK also has an open-ear design and a stated weight of 30 grams. The battery is listed at 200 mAh, with up to 8 hours of playback or talk time after a 2-hour charge. Those details point to a lightweight option for swimming, running, cycling, and travel, though the 8-hour figure is a stated maximum rather than a guarantee for every use pattern. Unlike PSIER, SAMVEK’s sheet does not mention an adjustable strap, so a buyer prioritizing a configurable fit for a larger head has less specific fit information to go on.
Who should skip SAMVEK: Skip it if you need Bluetooth audio underwater or want a documented adjustable strap for fine-tuning the fit.
• Best for a big-head fit adjustment → PSIER Bone Conduction Headphones. Its data sheet specifically lists both a flexible memory-titanium frame and an adjustable strap. SAMVEK’s sheet gives no comparable strap detail.
• Best for swimming → SAMVEK Swimming Headphones. Its IP68 rating and described underwater use up to 2 meters make it the water-focused option.
• Best for Bluetooth use underwater → Neither. SAMVEK explicitly requires MP3 mode for swimming because Bluetooth does not work underwater; PSIER has no stated swimming rating.
• Best for music without a phone nearby → SAMVEK Swimming Headphones. Its built-in 32GB memory lets you store compatible audio directly on the device.
• Best for stated low latency → PSIER Bone Conduction Headphones. It lists 60 ms latency, which may matter for video or workout content where timing feels noticeable.
• Best for a listed longer playback figure → SAMVEK Swimming Headphones. Its sheet states up to 8 hours of playback or talk time after a 2-hour charge; PSIER does not provide a battery figure in the supplied details.
• Best for a stated Bluetooth version → PSIER for version 6.0; SAMVEK lists version 5.4 in its key features. The SAMVEK description also refers to Bluetooth 6.0, so its supplied materials are inconsistent on that point. I would not make the Bluetooth version the deciding factor.
• Best for someone comparing the best true wireless earbuds for big head → PSIER is the more relevant fit candidate, but neither is described as a conventional true-wireless earbud. Both are open-ear bone-conduction headphones, and PSIER is the one with an adjustable strap.
• Best for a low-latency sports option for a big head → PSIER Bone Conduction Headphones. The combination of the listed 60 ms latency and adjustable fit details makes it the more targeted match, although the sheet does not guarantee an individual fit.
Before choosing, decide whether your routine involves water. SAMVEK’s waterproof rating is the meaningful difference if you plan to swim, but underwater listening requires planning: audio must be loaded onto the built-in memory, and you must switch to MP3 mode. A phone’s Bluetooth connection is not a substitute in the pool. If you mainly exercise on land and want to stream from a nearby device, PSIER’s listed Bluetooth 6.0 and 33-foot range are more directly aligned with that use.
Fit claims also deserve a careful read. PSIER gives more explicit fit-adjustment information through its flexible frame and adjustable strap, which could be useful for a larger head. But no numerical head-size range is provided, so the specs cannot guarantee comfort for a particular person. SAMVEK lists its weight as 30 grams and describes an open-ear design, but does not provide the same adjustable-strap detail.
If you are comparing options partly on cost, check the current price on Amazon using the page’s price button. The product details here do not establish which one is the better purchase financially; that depends on the current prices and how much you value swimming capability, onboard storage, or fit adjustment.
My Verdict
In my opinion, I would choose PSIER Bone Conduction Headphones for everyday workouts and outdoor listening, especially if I were shopping for a big head and wanted an adjustable strap plus a flexible frame. Its stated 60 ms latency is another useful detail for sports content. I would choose SAMVEK instead if swimming and stored underwater audio were essential. The deciding question is simple: adjustable fit for land-based use, or IP68 protection and MP3 playback for the water.
No. The supplied information says Bluetooth is not supported underwater. Switch to MP3 mode and play audio stored in the headphones’ built-in memory.
PSIER is the clearer fit-focused choice because it lists a flexible memory-titanium frame and an adjustable strap. The data does not specify a head-size range, so those features cannot guarantee a fit for every wearer.
The supplied PSIER details do not list onboard storage. They describe Bluetooth connectivity, so the documented use is listening through a connected Bluetooth device rather than playing files stored on the headphones.
SAMVEK lists up to 8 hours of playback or talk time after a 2-hour charge. The supplied PSIER details do not state a battery-life figure, so there is no direct comparison available from the listed specifications.
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