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If you want a pair of everyday true-wireless earbuds that stay locked in your ears through long runs, gym sessions and work calls, choose sprtoybat Earbuds; if you need headphones that keep working when Bluetooth cannot — laps in the pool, ocean swims, open-water training — choose MUXUN Bone Conduction Headphones.
• sprtoybat Earbuds — biggest strength: a charging case that takes total playtime to 68 hours, plus IPX7 sweat and water resistance and 14.2mm graphene drivers built for bass-forward workout listening.
• sprtoybat Earbuds — biggest trade-off: they are in-ear buds that seal off your ears, so you lose some awareness of traffic, and the noise control is passive only, not active cancellation.
• MUXUN Bone Conduction Headphones — biggest strength: IP68 protection rated for submersion up to two metres for two hours, plus 32GB of onboard storage so you can swim with music and no phone nearby.
• MUXUN Bone Conduction Headphones — biggest trade-off: only 8 hours of battery per charge, and bone conduction sends sound through your cheekbones, so bass and isolation are naturally limited compared with in-ear drivers.
• Pick sprtoybat if your day is running, lifting, commuting and calls.
• Pick MUXUN if your day involves water — swimming laps, open-water training, or sweaty outdoor sessions where you want your ears open.
The sprtoybat Earbuds are built around one idea: keep the music going for as long as possible without asking you to think about charging. The case holds an 800mAh battery and recharges the buds roughly eight to nine times, which is how sprtoybat arrives at a 68-hour total figure. A single charge gives you up to 8 hours, and Type-C fast charging gets you 2 hours of playback from a 10-minute top-up. For a week of commutes and gym sessions, that is the kind of number that means you can genuinely forget the charger at home.
Where they fall short is exactly where bone conduction shines. Because these are in-ear buds with passive noise cancellation, they physically block your ear canal. That is great for immersion and poor for situational awareness — I would not recommend them as your primary pair for road cycling in traffic or open-water swimming. They also do not have onboard storage; everything runs over Bluetooth 5.4, which is stable and low-latency but still needs a paired device within roughly 15 metres. Skip these if you want to swim with music and no phone, or if you need to hear your surroundings while you train.
MUXUN Bone Conduction Headphones: Who It's For
The MUXUN Bone Conduction Headphones solve a problem most earbuds simply cannot: playing audio underwater, without a phone. The headline feature is 32GB of built-in memory. You load MP3 files over the included cable from a computer, switch to MP3 mode with a two-second press of the M button, and swim. No Bluetooth signal has to survive the water, which is the whole point — the brand is explicit that Bluetooth is not the mode to use while swimming.
The IP68 rating backs that up. A triple-sealed design means the headphones can be submerged to two metres for up to two hours, covering pools, lakes and ocean water. The open-ear bone conduction design transmits sound through your skull, so your ear canal stays clear. In a pool that means you keep your bearings; on a road or trail it means you hear cars and other people. The frame is slim and light, and it is shaped to sit under a swim cap, around goggles, or alongside sunglasses and a bike helmet.
The trade-offs are real and worth naming. Battery life is 8 hours per charge, with a 10-minute quick charge giving up to 3 hours — a fraction of what the sprtoybat case delivers. Bone conduction drivers (50 ohm, 200Hz–20,000Hz) cannot move air the way in-ear drivers do, so bass is thinner and detail is softer; anyone chasing club-level low end will notice. Bluetooth range is also shorter at about 10 metres, and it is Bluetooth 5.4 like the sprtoybat, so day-to-day wireless performance is comparable. Buy these if you swim, or if open-ear awareness matters more to you than isolation. Skip them if you want maximum battery, deep bass, or a case that recharges your buds on the go.
• Best for total battery life → sprtoybat Earbuds. 8 hours per charge plus a case that stretches it to 68 hours total.
• Best for swimming → MUXUN Bone Conduction Headphones. IP68, submersible to two metres for two hours, with 32GB of onboard MP3 storage.
• Best for bass and immersive sound → sprtoybat Earbuds. 14.2mm dual-layer graphene dynamic drivers versus bone conduction, which trades low-end punch for open ears.
• Best for hearing your surroundings → MUXUN Bone Conduction Headphones. Open-ear placement keeps traffic, other runners and pool lanes audible.
• Best for calls in noisy places → sprtoybat Earbuds. The ENC microphone is designed to cut background noise so your voice comes through clearly.
• Best for quick top-ups → MUXUN Bone Conduction Headphones. A 10-minute charge yields up to 3 hours, the fastest turnaround between the two.
• Best for gym, running and lifting → sprtoybat Earbuds. TPU ear hooks, three tip sizes and IPX7 sweat protection are made for hard indoor sessions.
• Best for swimming plus cycling and helmets → MUXUN Bone Conduction Headphones. The slim frame is designed to sit under caps, goggles and helmets.
In my opinion, the right answer depends entirely on whether water is part of your routine. If it is not — if your training is runs, gym sessions, commutes and calls — I would buy the sprtoybat Earbuds. The 68-hour total playtime, IPX7 protection and bass-forward graphene drivers make them the better all-day, everyday pair, and the ENC mic handles calls properly.
If you swim, MUXUN wins by default, and not narrowly. No in-ear bud can do MP3 playback two metres underwater for two hours. The 8-hour battery and softer bass are the price of that capability. Buy the MUXUN for the pool; buy the sprtoybat for everything else.
FAQ
Yes. They run Bluetooth 5.4 with roughly 10 metres of range, and you switch between Bluetooth and MP3 mode with a two-second press of the M button. Use MP3 mode for swimming, since Bluetooth does not work well underwater.
I do not quote prices here. Check the current price on Amazon using the button on this page, then weigh it against your needs — 68 hours of case-backed playtime versus IP68 swimming with onboard storage.
For bass and immersion, sprtoybat. Its 14.2mm dual-layer graphene drivers move air directly into a sealed ear canal. MUXUN uses bone conduction (50 ohm, 200Hz–20,000Hz), which favours awareness over low-end punch.
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