If you want in-ear headphones for swimming, choose KOPIDOE Swimming Headphones; if you need open-ear headphones for running, choose Langsdom AirWave Max Open-Ear. For kids bluetooth use, KOPIDOE’s adjustable headband and phone-free MP3 playback make it the more swim-focused choice, while Langsdom is designed around outdoor movement and app-based sound adjustments.
• KOPIDOE’s biggest strength: IP68 waterproofing, bone-conduction playback, and built-in 32GB storage for listening underwater in MP3 mode. Trade-off: Bluetooth does not work underwater, so you need to switch modes and load music onto the headphones.
• Langsdom’s biggest strength: An open-ear fit for running and commuting, plus app EQ control and up to 17 hours of playback at 50% volume. Trade-off: Its IP67 protection is for sweat, rain, and dust, not swimming underwater.
• Choose KOPIDOE for swimming, swim-cap compatibility, and phone-free music in the water.
• Choose Langsdom for land-based workouts, outdoor awareness, and adjustable sound through its companion app.
KOPIDOE is the swim-focused option. Its open-ear bone-conduction design keeps the ear canals clear, while the IP68 rating is intended for full submersion. That combination is useful for someone who wants music during pool sessions without relying on a phone beside the water. The adjustable headband is designed to fit different head sizes and work with a swim cap or hat.
There is one important mode switch to understand before getting in the water: Bluetooth does not work underwater. For swimming, KOPIDOE must be set to MP3 mode, with music stored on its built-in 32GB memory. That gives you a phone-free listening setup, but it is not the same as streaming from a phone while you swim. Bluetooth 6.0 is for compatible listening and connections outside the water; the product information also says it can connect to two devices simultaneously.
For kids bluetooth use, the adjustable fit and straightforward phone-free MP3 idea may appeal to families looking for swim headphones, but the listed age description is adult. I would not assume it is sized or intended specifically for children. Skip KOPIDOE if you want to stream over Bluetooth underwater or mainly need headphones for everyday calls and land workouts.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-23 · 6 min read · Independent comparison
Langsdom AirWave Max Open-Ear: Who It's For
Its IP67 rating is described for sweat, rain, and dust. That is useful protection for workouts and outdoor conditions, but it should not be treated as permission to swim with the headphones. For swimming, KOPIDOE’s IP68 rating and explicit underwater use are the more relevant facts. Langsdom has built-in storage for phone-free MP3 listening, too, so leaving a phone behind is possible when running or training.
The companion app adds battery-status checks and EQ adjustments, including options for bass or more natural vocals. The stated playback time is up to 17 hours at 50% volume, so treat that figure as a specified condition rather than a promise at every volume or in every use. Skip Langsdom if your main activity is swimming, or if you want a sealed, noise-isolating fit; its open-ear approach is designed to keep you aware of your surroundings.
• Best for swimming underwater → KOPIDOE Swimming Headphones. Its IP68 rating and swim-focused design make it the clear match. Use MP3 mode in the water; Bluetooth does not work underwater.
• Best for running and commuting → Langsdom AirWave Max Open-Ear. The open-ear air-conduction design is intended to preserve awareness of traffic and pedestrians.
• Best for a swim cap or hat → KOPIDOE. Its adjustable headband is described as compatible with both.
• Best for app-based sound adjustment → Langsdom. The companion app can adjust EQ and show battery status.
• Best for stated long playback on land → Langsdom. It specifies up to 17 hours at 50% volume.
• Best for phone-free music in the pool → KOPIDOE. Its 32GB memory supports MP3 playback without carrying a phone into the water.
• Best for a two-device Bluetooth connection → KOPIDOE. Its feature list states support for connecting to two devices simultaneously.
• Best choice for “with mic in ear headphones for hunting” or “with microphone headset for basketball” searches → neither is an exact match. Both are open-ear designs, and neither product sheet establishes a hunting-specific in-ear fit or a basketball-specific microphone performance. Pick based on the activity and the listed features rather than assuming those use cases are covered.
Buying Considerations
Start with where you will wear the headphones. The difference between IP68 and IP67 matters here: KOPIDOE is specified for full submersion, while Langsdom is described as suitable for sweat, rain, and dust. If your routine includes swimming, that distinction outweighs features such as app EQ or longer specified playback time. For runs, cycling, and commutes, Langsdom’s open-ear design and workout-oriented fit are more directly relevant.
Fit and controls are also worth thinking through. KOPIDOE’s adjustable headband is designed to accommodate different head sizes and work with swim caps or hats. Langsdom wraps around the ear and has push-button control as well as companion-app support. The product information lists a 27 g weight for Langsdom, but does not give a comparable KOPIDOE weight in the same product-details field, so I would not infer a direct weight advantage from the listed specifications.
Finally, be realistic about what open-ear listening means. Both designs leave the ear canals open, which helps preserve awareness but does not provide noise isolation. Neither lists noise control. If blocking surrounding sound is your priority, these are not the features to focus on; choose between them based on water resistance, fit, playback mode, and the kind of activity you do.
I would choose KOPIDOE Swimming Headphones if I were buying for swimming: IP68 protection, an adjustable headband, and MP3 playback make the use case specific and clear. For kids bluetooth use, I would still check fit carefully because the listed age description is adult, rather than assuming it is child-sized. If my routine were mostly running, cycling, or commuting, I would choose Langsdom instead for its open-ear design, app EQ, and stated 17-hour playback at 50% volume.
No. The product information says Bluetooth does not work underwater. Switch to MP3 mode before swimming and use music stored on the headphones.
Its IP67 protection is described for sweat, rain, and dust, not full submersion. For swimming, KOPIDOE’s IP68 rating is the relevant difference.
Langsdom is the more direct fit for running, cycling, and commuting. Its open-ear design is intended to keep the ear canals open, and its wrap-around fit is designed for movement.
Neither product lists noise control, and both use open-ear designs. They are intended to let you remain aware of your surroundings, not isolate you from them.
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