If you want open-ear wireless headphones for computer work and everyday listening, choose TRAUSI IPX7; if you need headphones built for swimming with onboard MP3 playback, choose KOPIDOE Swimming Headphones Underwater.
KOPIDOE is the clear swimming choice, but its Bluetooth mode does not work underwater, so you need to switch to MP3 mode before getting in the water.
TRAUSI IPX7 vs KOPIDOE Swimming Headphones Underwater at a Glance
• TRAUSI IPX7: Open-ear hook design, Bluetooth 5.4, touch controls, and a stated 50-hour average battery life. The trade-off is that its sheet does not specify a swimming-use rating or onboard MP3 storage.
• KOPIDOE Swimming Headphones Underwater: IP68 protection, bone-conduction audio, and 32GB of built-in storage for swimming in MP3 mode. The trade-off is that Bluetooth audio is not usable underwater.
• TRAUSI suits computer work, calls, and everyday listening when staying aware of your surroundings matters.
• KOPIDOE suits swimmers who want to leave their phone poolside and listen from the headphones’ built-in storage.
• Choose TRAUSI for a simpler Bluetooth headset for a desk and daily routines; choose KOPIDOE for swimming-specific protection and playback.
TRAUSI’s defining choice is its open-ear hook design. Rather than sealing the ear canal, the earpieces sit around the ears, leaving the surrounding environment accessible. That can make sense at a computer when you want music or audio in the background without feeling fully cut off from conversation. Its open design also aligns with the listed uses of walks, commuting, and everyday listening, where awareness of nearby sounds can matter.
For computer use, the practical appeal is a familiar wireless setup: Bluetooth 5.4 connects the headphones to a compatible device, and touch controls let you operate them without relying on a headphone jack. The listed Bluetooth range is 15 meters, while the average battery life is stated as 50 hours. Those figures suggest less frequent charging than a shorter-lived headset would require, although actual runtime can vary with use. A wireless charging case is included, along with a Type-C cable.
The sheet also lists environmental noise cancellation, but it does not describe this as active noise cancelling. I would not treat TRAUSI as a way to block out a busy room. Its open-ear format is designed to keep the ears unsealed, so nearby sounds remain part of the listening environment. That is a useful trade-off for awareness, but less suitable if your priority is isolating yourself from household or office noise.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-20 · 7 min read · Independent comparison
KOPIDOE is designed around swimming rather than ordinary computer listening. Its IP68 rating and bone-conduction open-ear design distinguish it from a standard Bluetooth headset. The key instruction is important: Bluetooth mode does not work underwater. For swimming, you need to switch to MP3 mode before getting in, then listen to audio stored on the headphones rather than streamed from a phone.
The built-in storage is listed as 32GB. That gives swimmers a way to carry music without bringing a phone into the water, and the adjustable headband is described as compatible with swim caps and hats. The headphone design leaves the ear canals open, while the included adjustment strap offers another way to set the fit. If you want audio during a swim but do not want to rely on a phone at the pool, those are its most relevant features.
On dry land, KOPIDOE lists Bluetooth 6.0 and dual-device pairing, which may be useful when switching between two connected devices. But its product details are inconsistent: one description also refers to Bluetooth 5.4, and the listed storage capacity is described elsewhere as holding different song counts. I would rely on the stated 32GB capacity and the clear underwater limitation rather than assume a specific number of tracks or a particular Bluetooth version beyond the conflicting information. The sheet gives no battery-runtime figure, so there is no comparable number to set against TRAUSI’s stated 50 hours. Magnetic charging is included, but no charging time is specified.
Who should skip KOPIDOE: Skip it if you want a conventional computer headset with a clearly stated battery runtime and expect to stream audio over Bluetooth while underwater.
• Best fit for computer work → TRAUSI IPX7. Its Bluetooth connection, touch controls, open-ear hooks, and stated 50-hour average battery life suit desk listening and everyday use.
• Best for swimming underwater → KOPIDOE. Its IP68 rating and built-in MP3 storage address a need that TRAUSI’s listed specifications do not cover.
• Best for phone-free listening in the pool → KOPIDOE. Switch to MP3 mode before swimming so playback comes from the headphones’ storage.
• Best when Bluetooth streaming is the priority → TRAUSI for normal, non-underwater use. KOPIDOE’s Bluetooth mode does not work underwater, and its MP3 mode is the stated route for swimming.
• Best for a stated battery-life figure → TRAUSI. Its average battery life is listed as 50 hours; KOPIDOE’s sheet does not give a runtime figure.
• Best for an adjustable fit around swim gear → KOPIDOE. Its headband is adjustable and listed as compatible with swim caps and hats.
• Best for keeping ears open to nearby sounds → Both, with different designs. TRAUSI uses open-ear hooks; KOPIDOE uses bone conduction and also leaves the ear canals free.
• Best for a kids headset for computer use → neither is specifically identified as a children’s headset. TRAUSI lists an adult and youth age range, but that alone does not establish a child-specific fit or suitability.
For my computer setup, I would choose TRAUSI IPX7 because its open-ear design, touch controls, Bluetooth connection, and stated 50-hour average battery life fit everyday desk use more directly.
I would choose KOPIDOE instead if swimming were the main job: IP68 protection and onboard MP3 playback solve a specific underwater listening need.
Neither sheet supports calling either option active noise cancelling true wireless earbuds for computer use.
And despite the appeal of the phrase best fast charging sleep headphones for computer, KOPIDOE’s magnetic charging description does not specify charging speed or sleep use.
For computer first, my pick is TRAUSI.
Think about where you will listen before choosing. At a desk, open-ear headphones can let room sounds reach you, but that also means they are not the obvious choice for blocking distractions. TRAUSI’s environmental noise cancellation is listed without further detail, so I would not assume it creates the isolation of sealed earbuds or active noise cancelling headphones.
For swimming, the distinction is more decisive than the Bluetooth version or charging connection. KOPIDOE’s instructions say Bluetooth does not work underwater, making MP3 mode essential in the pool. If you are not comfortable managing stored audio and switching modes, that requirement could outweigh the benefit of its waterproof design. Conversely, if your main requirement is simply wireless audio at a computer, onboard MP3 storage may not add much.
The charging details also deserve a careful comparison. TRAUSI provides a stated average battery life and includes a wireless charging case and Type-C cable. KOPIDOE includes a magnetic charging cable and describes magnetic fast charging, but gives no battery-runtime or charging-time figure. That means the available information supports a clearer battery-life comparison for TRAUSI, not a conclusion that KOPIDOE charges faster in practice.
Finally, consider fit and device habits. TRAUSI uses hooks around the ears and touch controls. KOPIDOE has bone-conduction placement and an adjustable headband designed to work with swim caps or hats. KOPIDOE also lists dual-device pairing for Bluetooth use on land. Neither product sheet provides dimensions, so there is no factual basis here to say which will fit a particular head or ear better. If current price matters to your decision, check the current price on Amazon rather than relying on an estimate.
FAQ
TRAUSI is the more direct fit based on its listed Bluetooth connection, touch controls, open-ear hooks, and 50-hour average battery life. KOPIDOE can connect by Bluetooth on land, but its main design advantages are aimed at swimming.
The listed noise-control feature is environmental noise cancellation, not active noise cancelling. Its open-ear design keeps the ear canals unsealed, so the product information does not support treating it as a noise-isolating headset.
TRAUSI lists an average battery life of 50 hours and includes a wireless charging case and Type-C cable. KOPIDOE lists magnetic charging but does not provide a battery-runtime figure or a charging-time measurement.
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