How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want one set that covers sleep, work and everyday sports for the smallest possible outlay of space in your ears, choose MSHUKCOE Headset，Tiny Size Invisible; if you need headphones that genuinely survive being submerged while you swim laps, choose esonstyle Swimming Headphones Underwater.
• MSHUKCOE's biggest strength: a two-pair set — ultra-slim sleep buds plus short-handle sports earphones — with Bluetooth 5.4, touch control and up to 36 hours of total listening time with the case.
• MSHUKCOE's biggest trade-off: it is not a waterproof headphone. Nothing in the spec sheet promises swimming, and its noise control is listed as "None," so it leans on physical and acoustic cancellation rather than active ANC.
• esonstyle's biggest strength: IP68 waterproofing rated for depths up to 3 meters for 60+ minutes, bone conduction open-ear sound, and a built-in 8GB MP3 player so you can swim without a phone.
• esonstyle's biggest trade-off: underwater you must leave Bluetooth behind. MP3 mode is the only mode that works while submerged, so you have to load songs in advance and switch modes with a double-click.
• Pick MSHUKCOE if your day is a mix of sleeping, working, calls and light training in dry conditions.
• Pick esonstyle if water is the whole point — swimming, surfing, kayaking, or heavy-sweat outdoor sessions.
This is a set, not a single pair, and that is the whole idea. You get ultra-slim sleep earbuds and a second pair of short-handle sports earphones in one box. The sleep buds weigh just 0.1oz each and are shaped to sit inside the ear almost unnoticed, which is why they're pitched for side sleepers, office workers, and anyone who wants audio running in the background without feeling hardware in their ears all day. The sports pair has a short handle so it stays put when you move.
On the tech side, MSHUKCOE uses Bluetooth 5.4 for faster pairing and steadier transmission within a 10-meter range. The microphone combines physical noise cancellation with acoustic noise cancellation to clean up calls in loud rooms. Battery is quoted at 4–6 hours per charge, roughly 5 hours average, and up to 36 hours when you loop both pairs through the charging case — enough to get through a full day without hunting for a cable. The touch controls use a newer T08 chip that the brand says improves touch accuracy by 18.5%, which matters because touch buttons on tiny buds are usually the most annoying part.
Who should buy it: sleepers, remote workers, commuters, students, and anyone who wants a discreet spare pair for the gym. Who should skip it: swimmers, and anyone who wants active noise cancellation. There is none here. If your main use is underwater, this is the wrong product entirely.
The esonstyle X32 is built around one job: working in water. IP68 means fully submersible, rated to 3 meters for 60+ minutes, which covers lap swimming, surfing, kayaking and hard rain. It's bone conduction, so the drivers sit on your cheekbones and your ear canals stay completely open — you hear your music and your surroundings at the same time, which is the safety argument for running and cycling on roads. The frame is a 28g titanium build with a flexible fit, described as sweatproof and shatterproof.
The second half of the story is the 8GB MP3 player. Around 2000 songs live on the headphones themselves, so you can leave your phone in the locker and swim untethered. That's not a bonus feature — it's the core of the design, because Bluetooth does not work underwater. Water interferes with the signal, so while swimming you double-click the MFB button to switch into MP3 mode. Files go on via the magnetic charging cable from a computer. In MP3 mode you get sequential playback by default, and three presses of the MFB switches to shuffle. Battery is quoted at 8 hours, which is several swim sessions or a long ride.
Who should buy it: swimmers, triathletes, surfers, kayakers, and outdoor runners who want open ears. Who should skip it: anyone who mainly wants to take phone calls or stream from a phone while in the water — Bluetooth 6.0 handles calls and streaming fine on land within 10 meters, but not submerged. Also skip it if you dislike open-ear sound; bone conduction trades bass punch for awareness.
• Best for swimming → esonstyle Swimming Headphones Underwater. IP68, 3 meters, 60+ minutes, MP3 mode. MSHUKCOE makes no waterproof claim.
• Best for sleep → MSHUKCOE Headset，Tiny Size Invisible. 0.1oz sleep buds designed to disappear in the ear.
• Best for battery → esonstyle on a single charge (8 hours) vs MSHUKCOE across the set (up to 36 hours with the case). Different math: one long session versus all-day rotation.
• Best for phone calls → MSHUKCOE. Bluetooth 5.4 with dual noise cancellation for the mic. esonstyle's calls only work out of the water.
• Best for leaving your phone behind → esonstyle. 8GB of built-in storage. MSHUKCOE needs a paired device within 10 meters.
• Best for open-ear safety → esonstyle. Bone conduction keeps your ears open for traffic and pool mates.
• Best for discreet, near-invisible wear → MSHUKCOE. That's literally the product name, and the mini design backs it up.
• Best for two people or two routines → MSHUKCOE. Two pairs in one set means one can live in the bedroom and one in a gym bag.
In my opinion, these two aren't really rivals — they solve different problems. If I had to pick one for the average person reading this, I'd take the MSHUKCOE Headset，Tiny Size Invisible, because sleep, work, calls and dry-weather training cover far more hours of a normal week than swimming does. But if you swim, the choice flips completely: the esonstyle is the only one of the two that can go underwater at all, and its built-in MP3 player is exactly what pool training needs. Buy for the environment you'll actually use it in. Check the current price on Amazon before deciding.
FAQ
There's no waterproof rating in its specs, so I wouldn't. Treat it as a sleep, work and dry-sports headset, and keep it away from water.
Not in the water. The 8GB built-in memory holds roughly 2000 songs, so you can swim or run phone-free. On land, Bluetooth 6.0 handles streaming and calls within about 10 meters.
MSHUKCOE, clearly. It pairs Bluetooth 5.4 with physical and acoustic noise cancellation on the mic, while esonstyle's calling works only outside the water. If calls matter most, MSHUKCOE is the pick.
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