We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 6 min read · Independent comparison
If you want one pair of headphones that pulls double duty for swimming, running and everyday Bluetooth listening, choose MUXUN Bone Conduction Headphones; if you need a big batch of simple wired USB-C headphones for a classroom, a testing lab or a family of device-sharers, choose GDBOMA USB C Headphones.
• MUXUN's biggest strength: it is a genuine two-in-one audio tool — Bluetooth 5.4 plus a built-in 32GB MP3 player, wrapped in an IP68 shell that survives full submersion in the pool.
• MUXUN's biggest trade-off: it is a single pair of headphones, open-ear by design, so it is not a quiet, sealed listening experience and it is not meant to be shared around a room.
• GDBOMA's biggest strength: a 30-pack of wired USB Type C on-ear headphones — plug-and-play simplicity with no battery, no pairing and no charging routine.
• GDBOMA's biggest trade-off: no Bluetooth, no MP3 storage and no noise control. It is a cable, a driver and a USB-C plug, nothing more.
• Who MUXUN is for: swimmers, runners, cyclists and open-ear listeners who want one rugged set of headphones for themselves.
• Who GDBOMA is for: schools, testing rooms, and anyone who needs many cheap, reliable, cable-tethered headphones at once.
MUXUN's pitch is that it solves a problem most headphones ignore: what do you wear in the water? The answer here is bone conduction. Instead of firing sound into your ear canal, it transmits vibration through your skull, so your ears stay open and you keep hearing traffic, teammates or lane-mates. The numbers back the design up: a bone conduction driver rated 20 Hz to 20,000 Hz, 50 ohm impedance, and Bluetooth 5.4 with a 33-foot range.
The feature that matters most for swimmers is the 32GB of on-board 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 leave your phone in the locker. That is the smart part — Bluetooth does not travel through water, so the MP3 mode is what actually works in the pool. Battery is listed at up to 8 hours of continuous play, with a 10-minute quick charge good for roughly 3 hours, and the carrying case itself holds a 180 mAh battery rated at 12 hours. The IP68 rating means it can be submerged to about two meters for two hours, and the frame is built from metal and silicone for a slim, ergonomic fit that plays nicely with swim caps, goggles, sunglasses and bike helmets.
Who should buy it? Anyone whose workout happens in or near water, anyone who wants to stay aware of their surroundings while running or cycling, and anyone tired of charging a phone just to listen to music. Who should skip it? If you want deep, isolating bass in a quiet room, bone conduction is the wrong tool — open-ear design means you hear the world around you by definition. And if you need headphones for several people to use at once, one pair of MUXUNs will not cover it.
GDBOMA is playing an entirely different game, and it is a smart one. This is a bulk 30-pack of wired, on-ear USB Type C headphones in mixed colors, aimed at classrooms, schools, testing centers, and families with a pile of tablets and phones to keep quiet. There is no battery to charge, no pairing to fumble, and no app to configure. You plug the USB-C connector in and sound comes out.
The spec sheet is deliberately simple: on-ear earpiece shape, dynamic drivers, 32 ohm impedance, plastic and silicone construction, USB Type C connectivity, and a one-year warranty. Noise control is listed as none, which is honest — these are not noise-cancelling headphones and they are not pretending to be. The mixed colors are a practical touch for classrooms, where assigning "the blue one" to a student is easier than labeling everything with tape.
Who should buy it? Teachers, school IT staff, testing coordinators, and anyone buying headphones in bulk for kids, teens and adults who just need something that works the moment it is unplugged from a drawer. The one-year warranty is meaningful at this quantity — one dud in a 30-pack is an annoyance, not a disaster. Who should skip it? Anyone who wants wireless freedom, anyone who wants to listen while swimming or running, and anyone who cares about rich audio tuning. There is no Bluetooth here, no MP3 storage, and no environmental noise cancellation. Wired, basic, and fine with that.
Side-by-Side: Which Should You Choose?
• Best for swimming → MUXUN. IP68 with two-meter submersion and a built-in MP3 player is the whole point.
• Best for running, cycling and open-ear safety → MUXUN. Open-ear design plus Bluetooth 5.4 at 33 feet keeps you aware and untethered.
• Best for classrooms, testing and bulk buying → GDBOMA. 30 pairs, mixed colors, no charging, no pairing, no setup.
• Best for zero-maintenance simplicity → GDBOMA. Plug into a USB-C port and go. Nothing to remember.
• Best for kids and shared devices → GDBOMA. On-ear, plastic and silicone, one-year warranty, and cheap enough to replace individually.
• Best for a single serious athlete → MUXUN. Metal and silicone build, secure ergonomic fit that works under caps, goggles and helmets.
• Best for isolating, bass-forward listening → neither. MUXUN is open-ear, and GDBOMA lists no noise control. If that is your priority, keep looking.
In my opinion, MUXUN Bone Conduction Headphones are the more interesting and more capable product here, and they are what I would buy for myself. The combination of Bluetooth 5.4, a real 32GB MP3 player, IP68 waterproofing and up to 8 hours of play covers swimming, running and daily listening in one device — that is a lot of jobs for one pair of headphones. GDBOMA is the better answer only if your problem is volume: thirty people who each need working headphones, today, with no charging and no setup. If you are one person who wants to listen in the pool, go MUXUN. If you are outfitting a room, go GDBOMA.
how to make headphones music louder
First check the source: turn up the volume on the phone, tablet or laptop itself, then on the headphones. The MUXUN has button controls for volume, so use those rather than relying only on the device. The GDBOMA has no inline controls listed, so its loudness is set entirely by the device you plug it into.
how to fix stereo headphones
Start with the simple checks: reseat the USB-C plug or charging cable, try a different device or port, and confirm the cable is not bent or frayed. On the MUXUN, a short two-second press of the M button switches between Bluetooth and MP3 mode — if audio seems missing, you may simply be in the wrong mode. If one side stays silent, the driver or cable is likely the culprit.
how to test stereo headphones
Play a track with clear left-right separation and listen for both channels, then swap the headphones to a second device to rule out the source. On the MUXUN you can also test both modes — Bluetooth and the built-in MP3 player — to confirm each path works. With GDBOMA, plugging into a known-good USB-C port is the fastest way to confirm a pair is functioning.
how to make stereo headphones
You cannot convert a mono or single-earbud design into true stereo without hardware that supports two channels. Both products here are already stereo-capable: the MUXUN uses a bone conduction driver, and the GDBOMA uses dynamic drivers, each fed by a stereo source. The real variable is your audio file or stream — make sure it is a stereo recording, not mono.
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