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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want all-day battery life with Bluetooth you can rely on for running, cycling and everyday outdoor training, choose MZYQCY Bone Conduction Headphones; if you need headphones that keep playing music while you're actually in the water, choose SAMVEK Swimming Headphones Underwater.
• MZYQCY biggest strength: 15 hours of playback, Bluetooth 5.4 and only 29g on your head — a solid everyday training companion.
• MZYQCY biggest trade-off: IPX6 means sweat and rain are fine, but it is not built for full submersion, so swimming is off the table.
• SAMVEK biggest strength: IP68 waterproofing plus 32GB of built-in MP3 storage, which is what lets it work underwater where Bluetooth cannot.
• SAMVEK biggest trade-off: No noise control and no surround awareness for calls, and its Bluetooth range is shorter at 10m (33 ft).
• Pick MZYQCY if your workouts are on land — running, cycling, gym, commuting.
• Pick SAMVEK if your workouts happen in a pool or the sea — or if you want music without carrying your phone.
MZYQCY's pitch is simple: keep your ears open and your battery full. The open-ear bone conduction design sits on your cheekbones instead of inside your ear canals, so traffic, other runners and ambient noise stay audible while you train. For anyone who runs or cycles near roads, that awareness is the whole point — it's the reason you'd choose bone conduction over sealed earbuds in the first place.
The 15-hour battery is the standout number here. That covers marathon-length sessions and multi-day stretches between charges, and the 1.5-hour charge time means a short top-up gets you back out the door. Bluetooth 5.4 with a stated range up to 49.2 feet (15m) gives you headroom to leave your phone on a bench or in a bag while you move around. At 29g it's light enough to forget you're wearing it, and the titanium frame is described as staying put through sprints.
IPX6 is the honest limit. That rating covers heavy sweat, rain and splashes, so it handles hard interval training and bad weather without complaint. It does not cover immersion. The environmental noise cancellation and HD stereo mics with noise reduction are aimed at calls in windy conditions, which fits the outdoor-running use case.
Who should buy it: runners, cyclists, walkers, gym-goers and commuters who want situational awareness, long battery life and a light fit. Who should skip it: swimmers, or anyone who wants music in the pool — IPX6 will not survive that.
SAMVEK solves a problem MZYQCY doesn't even attempt: music while you're submerged. Bluetooth doesn't travel through water, which is why SAMVEK pairs its IP68 rating with 32GB of onboard storage. You load your tracks, switch to MP3 mode, and the headphones play from internal memory with no phone involved. The brand states it holds up to 8,000 songs (the description mentions up to 6,000, so treat both as approximate) and supports MP3, WMA, WAV, APE and FLAC files.
That same IP68 rating is what makes the whole thing work — completely waterproof, sweatproof and rainproof, rated for full immersion up to 2 meters deep for up to 2 hours. It's designed to be worn with a swimming cap, goggles and earplugs, which tells you the fit is meant to stay locked in while you're moving through water. The 30g weight and open-ear shape keep it comfortable for long sessions, and the bone conduction driver transmits sound through your cheekbones so your ear canals stay open.
Two things to be clear about. First, Bluetooth mode is explicitly not available underwater — you must switch to MP3 mode for swimming. Second, noise control is listed as none, and the Bluetooth range is 10 meters (33 feet), which is shorter than MZYQCY's. On land it still works as a normal open-ear sports headphone for running, cycling and exercise.
Who should buy it: swimmers, snorkelers, surfers and water-sports people who want music without a phone nearby. Who should skip it: anyone who mainly wants long Bluetooth battery life or call clarity — that's not what this is built for.
• Best for swimming → SAMVEK Swimming Headphones Underwater. IP68 and MP3 mode are the only combination here that works submerged.
• Best for battery life → MZYQCY Bone Conduction Headphones. 15 hours of playback versus no stated continuous-playback figure for the SAMVEK.
• Best for music without a phone → SAMVEK. 32GB of built-in storage means no device required.
• Best for longer Bluetooth range → MZYQCY. Up to 49.2 feet (15m) versus 10 meters (33 feet).
• Best for calls and wind noise → MZYQCY. It lists environmental noise cancellation and HD stereo mics; SAMVEK lists no noise control.
• Best for comfortable all-day wear → MZYQCY. 29g versus 30g is nearly a tie, but MZYQCY's titanium frame is specifically described as staying put during movement.
• Best for warranty coverage → SAMVEK. A 1-year warranty versus MZYQCY's 30-day description.
• Best for water resistance in rain and sweat only → MZYQCY. IPX6 is enough for weather and heavy sweating, and it's lighter on the spec sheet for land training.
In my opinion, most people searching these two names are runners first and swimmers second — and for that majority, I'd buy the MZYQCY Bone Conduction Headphones. The 15-hour battery, Bluetooth 5.4 with a longer range, the 29g titanium frame and the noise-cancelling mics all line up with what a land-based athlete actually needs, and IPX6 covers the sweat and rain you'll genuinely hit.
I'd only switch to the SAMVEK if swimming is a real part of your routine. If it is, the IP68 rating and 32GB MP3 mode aren't nice extras — they're the reason the product exists, and no amount of battery life on the MZYQCY replaces them. Check the current price on Amazon before you decide, since that's the one variable I can't weigh for you.
FAQ
No. Bluetooth mode is not available underwater, and the brand explicitly says to switch to MP3 mode for underwater activities. Load your music into the 32GB storage first.
MZYQCY states 15 hours of playback and a 1.5-hour charge time. SAMVEK lists a 2-hour charge time but no continuous-playback figure, so on paper MZYQCY is the safer bet for long sessions.
No. Its IPX6 rating covers sweat, rain and splashes, not immersion. For pool or open-water swimming you need the IP68-rated SAMVEK instead.
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