We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 7 min read · Independent comparison
If you want all-day wireless listening with a battery case that shows you exactly how much juice is left, choose ZKBSIAXD Earbuds; if you need headphones that survive being fully submerged while you swim, choose KOPIDOE Swimming Headphones. These two products share a "waterproof" label, but they are built for completely different kinds of water. One is an everyday Bluetooth earbud with an IPX4 sweat rating. The other is a bone conduction swim tool with an IP68 rating and its own offline music storage. Let me break down where each one actually earns its place.
• ZKBSIAXD Earbuds — biggest strength: 60 hours of total playtime (8 hours per charge plus 52 hours in the case) with an LED display that shows the exact battery percentage of both the earbuds and the case.
• ZKBSIAXD Earbuds — biggest trade-off: IPX4 only means sweat and light rain resistance. It is not built for swimming, showering, or full submersion.
• KOPIDOE Swimming Headphones — biggest strength: IP68 waterproofing plus a 32GB built-in memory card for MP3 mode, so you can listen underwater without a phone.
• KOPIDOE Swimming Headphones — biggest trade-off: Bluetooth does not work underwater, so you must switch to MP3 mode before you get in the pool, and there is no noise control at all.
• Who each pick is for: ZKBSIAXD Earbuds suit commuters, gym-goers and anyone who wants one pair of wireless earbuds for the whole day. KOPIDOE Swimming Headphones suit lap swimmers and open-water swimmers who want music in the water, hands and phone free.
The ZKBSIAXD Earbuds are a classic true-wireless in-ear design, and the spec sheet leans hard into convenience. Bluetooth 5.4 handles the connection, pairing happens automatically when you open the case, and touch controls cover music, volume, calls and your voice assistant. There is a dynamic driver inside, and the brand describes the tuning as crisp and balanced with deep bass — which is the usual shape of an everyday earbud sound signature rather than a flat, analytical one.
The standout number is battery life: 8 hours of continuous music on a single charge, plus another 52 hours from the charging case. That is a genuinely long runway, and the LED digital screen takes the guesswork out of it by showing the exact percentage for both the earbuds and the case. If you have ever been caught out by a pair of earbuds dying mid-commute, that display is a small feature that changes how you use the product day to day.
Who should skip it? If your main use case is swimming, this is not your product. IPX4 is sweat and light-rain resistance, not submersion resistance. And if you specifically want to hear your surroundings while you run or cycle, an in-ear bud blocks more of that than an open-ear design will — though the brand does market an awareness angle for running and commuting.
KOPIDOE Swimming Headphones: Who It's For
The KOPIDOE Swimming Headphones are a different animal entirely. This is a bone conduction, open-ear design with an adjustable headband that sits outside your ear canal and transmits sound through your cheekbones. Nothing goes inside your ears, which means zero pressure and zero earache over long sessions, and your ear canals stay completely free — a real plus if you wear a swim cap or a hat, since the headband is designed to work with both.
The headline feature is the IP68 rating. That is full submersibility, which is a different category from the IPX4 rating on the ZKBSIAXD earbuds. The catch is important and the brand states it plainly: Bluetooth does not work underwater, so you must switch to MP3 mode before you get in. That is where the built-in 32GB memory card comes in. It holds a very large library of songs, so you leave your phone on the poolside and listen independently. In my opinion, that offline mode is the single most useful thing about this product — swimming with a phone nearby is not realistic anyway.
Elsewhere: Bluetooth 6.0 for the dry-land side of things, with support for connecting to two devices at once so you do not miss calls. Magnetic charging for a secure, quick top-up. The whole unit weighs 4.8 ounces, which is light enough to forget you have it on. The audio driver is a bone conduction driver with 30 ohm impedance. One thing to note — there is no noise control, which makes sense: an open-ear design that lets in poolside announcements and traffic is the point, not a flaw.
Who should buy it? Swimmers. Lap swimmers, open-water swimmers, and anyone who wants music in the water without carrying a phone. It is also a reasonable pick for runners and outdoor users who want full awareness of their surroundings.
Who should skip it? Anyone who wants deep, isolating bass or active noise cancellation. Bone conduction is a different listening experience, and there is no noise control here. And if you never get in the water, you are paying for IP68 and 32GB of storage you will not use.
• Best for battery life → ZKBSIAXD Earbuds. 60 hours total with a live percentage display beats anything you can reasonably expect from a bone conduction headband.
• Best for swimming → KOPIDOE Swimming Headphones. IP68 means fully submersible. IPX4 does not survive a lap.
• Best for gym and running → ZKBSIAXD Earbuds, thanks to the IPX4 sweat rating and three sizes of silicone tips for a secure fit.
• Best for listening without a phone → KOPIDOE Swimming Headphones, because of the 32GB built-in memory card and MP3 mode.
• Best for calls and everyday connectivity → ZKBSIAXD Earbuds. Bluetooth 5.4, automatic pairing on case open, touch controls and a built-in mic make it the more capable daily driver.
• Best for ear comfort over long sessions → KOPIDOE Swimming Headphones. Open-ear bone conduction keeps your ear canals free, which matters when you are wearing a swim cap.
• Best for staying aware of your surroundings → KOPIDOE Swimming Headphones. Open-ear design, no noise control, and the brand markets exactly this awareness angle.
• Best all-rounder for a single pair → ZKBSIAXD Earbuds, unless your week revolves around a pool.
If I had to pick one, I would buy the ZKBSIAXD Earbuds. Here is my reasoning: they cover more of real life. Commuting, calls, the gym, studying, travel — the 60-hour battery and LED display mean you stop thinking about charging, and Bluetooth 5.4 with automatic pairing keeps the whole thing frictionless. The IPX4 rating is enough for sweat and light rain, which is where most people actually meet water.
The KOPIDOE Swimming Headphones are the better product for exactly one job, but they do that job extremely well. If you swim regularly, IP68 plus 32GB of offline storage is a combination the ZKBSIAXD earbuds simply cannot match. Buy the KOPIDOE for the pool, and the ZKBSIAXD for everything else.
can i wear waterproof headphones in the shower
It depends on the rating. The KOPIDOE Swimming Headphones carry an IP68 rating and are fully submersible, so showering is within their design envelope. The ZKBSIAXD Earbuds are IPX4, which covers sweat and light rain only — I would not wear them in the shower.
are headphones waterproof
Not automatically. Water resistance is rated on a scale, and the two products here sit at very different points on it. IPX4 on the ZKBSIAXD Earbuds means splash and sweat resistance, while IP68 on the KOPIDOE Swimming Headphones means the unit can be submerged.
do these headphones work underwater
Only the KOPIDOE Swimming Headphones do, and only in MP3 mode. The brand states that Bluetooth mode does not work underwater, so you switch to MP3 mode and play from the built-in 32GB memory card. The ZKBSIAXD Earbuds are not designed for underwater use at all.
which one should i get if i want one pair for everything
In my opinion, the ZKBSIAXD Earbuds are the better single-pair choice for general use, because of the 60H battery, LED display and Bluetooth 5.4. If swimming is a regular part of your week, get the KOPIDOE Swimming Headphones as a dedicated second pair. Check the current price on Amazon before you commit.
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