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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a sport-first pair with a wider Bluetooth range, over-ear hooks, and a tank-like IPX7 water rating, choose Jesebang Earbuds; if you need a lighter everyday earbud with a clearer spec sheet on audio latency and app-based control, choose UPUNAIS Earbuds.
• Jesebang Earbuds — biggest strength: Bluetooth 5.4 with a claimed 15-meter range, 14.2mm dynamic drivers, IPX7 waterproofing, and a 50-hour total battery figure with a dual LED display. In my opinion, this is the more rugged, gym-and-rain pick.
• Jesebang Earbuds — biggest trade-off: It's a bulkier over-ear hook design at 7g per bud, so it's built for grip over subtlety. It also leans on physical touch controls rather than an app.
• UPUNAIS Earbuds — biggest strength: A 12mm driver tuned for balanced sound, ENC call noise suppression, 50 hours total playtime, and a dual LED battery readout, plus app, button, voice and Siri control in one package.
• UPUNAIS Earbuds — biggest trade-off: IPX4 splash resistance and a 10-meter Bluetooth range mean it's better for light sweat and everyday carry than heavy outdoor abuse.
• Who Jesebang is for: Runners, gym-goers, and anyone who wants a stay-put hook fit that shrugs off sweat and rain.
• Who UPUNAIS is for: Commuters, students, and desk workers who want a comfortable in-ear bud with app control and clear calls.
Jesebang's S75 is clearly designed around movement. The headline spec is the soft, elastic earhook that wraps over the ear, and the brand claims it stays put through running, jumping rope and other high-intensity work. That matters more than it sounds. Most earbuds fail at the gym not because the sound is bad but because they slowly work loose. A hook design attacks that problem directly, and at 7g per bud with three sizes of eartips in the box, there's some room to tune the fit to your ear shape.
The water and dust story is the other big one. This is an IPX7-rated pair, which is a meaningful step up from splash resistance — it's the kind of rating that handles sweat, rain and a rinse without drama. Combine that with a claimed 15-meter Bluetooth 5.4 range and you can leave your phone on a bench or in a bag and still keep the connection. The battery setup is 10 hours on a single charge, up to 50 hours total with the case, and a dual LED display that shows remaining power for both the buds and the case.
On sound, Jesebang uses 14.2mm dynamic drivers with 32-ohm impedance. Larger drivers generally move more air, and the brand leans into deep bass, clear mids and bright highs. For workouts and commuting, that's a sensible tuning. The ENC microphone is quoted at cutting up to 80% of background noise, which is the kind of figure I'd treat as a design target rather than a guarantee — but the intent, clearer calls in noisy places, is the right one.
UPUNAIS Earbuds: Who It's For
The UPUNAIS M145 takes a different angle. It's an in-ear bud with flexible ear hooks, so you still get stability, but the shape stays closer to a conventional earbud and the carrying case is compact — roughly 6.7cm by 6.1cm and about 58g. That's a case that disappears into a jacket pocket, which is exactly what you want if these live in your bag.
The audio spec sheet is unusually detailed. A 12mm custom dynamic driver, 20kHz frequency response, 115dB sensitivity, 32-ohm impedance, and a claimed audio latency of 0.1 milliseconds. That last number is the interesting one: low latency is what keeps audio and video in sync, so if you watch a lot of video or play games on your phone, this is a spec worth caring about. The 12mm driver is smaller than Jesebang's 14.2mm, but driver size isn't the whole story — tuning matters more, and UPUNAIS describes a balanced profile with deep bass, clear mids and crisp highs.
Calls get ENC noise suppression too, and the control story is broader: app control, button control, call and media control, voice control and Siri. Physical buttons are a real advantage in cold weather or when your hands are busy, and the app angle gives you a place to adjust things without fiddling with taps. Battery is up to 50 hours with the case, shown on a dual independent LED display, with a 2-hour charge time and a claimed 5 hours of average life per charge cycle.
The trade-offs are clear. IPX4 means sweat and light splashes, not swimming or heavy rain. Bluetooth range is quoted at 10 meters, which is fine around a home or office but shorter than Jesebang's. And despite listing "Bluetooth version: 6" in the specs, the practical takeaway is simply a stable wireless connection with rapid pairing — I wouldn't read that field as a generational claim.
Who should buy it: Commuters, students, remote workers and casual listeners who want comfortable in-ear buds, low-latency video, button and app control, and clear calls. Who should skip it: If you train hard outdoors, sweat heavily, or get caught in the rain, the IPX4 rating is the limiting factor.
• Best for water and sweat resistance → Jesebang Earbuds. IPX7 against IPX4 is the single clearest spec gap between these two.
• Best for the gym and running → Jesebang Earbuds. The over-ear elastic hook and 7g-per-bud build are aimed squarely at intense movement.
• Best for wireless range → Jesebang Earbuds. A claimed 15 meters versus 10 meters means more freedom to leave the phone down.
• Best for video and gaming sync → UPUNAIS Earbuds. The quoted 0.1ms latency is the spec to point at if lip-sync bugs you.
• Best for control options → UPUNAIS Earbuds. App, button, voice and Siri control beats touch-only in my book.
• Best for everyday carry → UPUNAIS Earbuds. A lighter in-ear shape and a compact 58g case travel better than over-ear hooks.
• Best for driver size → Jesebang Earbuds. 14.2mm versus 12mm, which usually translates to more low-end presence.
• Best for battery life → a tie. Both quote up to 50 hours with the case, and both show it on a dual LED display.
If I were buying one, I'd take the Jesebang Earbuds. The reason isn't sound — both use dynamic drivers with similar bass-forward tuning and the same 32-ohm impedance, and I'd expect them to be close. It's the fit and durability. IPX7 plus over-ear hooks is a combination that survives sweat, rain and a hard workout, and the longer Bluetooth range is a genuine convenience. The UPUNAIS is the better desk-and-commute bud, especially with app control and that low-latency figure, so if your listening is mostly indoors and on video, go that way instead. Check the current price on Amazon before you commit, since that's the one variable that can flip this decision.
For running, yes, in my opinion. Jesebang's IPX7 rating and over-ear elastic hooks are built for heavy sweat and movement, while UPUNAIS is IPX4 and better suited to lighter workouts.
Both brands quote up to 50 hours of total playtime when you count the charging case, with 10 hours per charge for Jesebang and a claimed 5-hour average per cycle for UPUNAIS. Real numbers depend on volume and use.
On paper, Jesebang has larger 14.2mm drivers and UPUNAIS has 12mm custom drivers with a quoted 20kHz response and 0.1ms latency. Bigger drivers usually mean more bass; UPUNAIS is the safer pick for video sync.
Yes. UPUNAIS lists Siri and voice control plus app and button controls, and both pairs use Bluetooth wireless with no headphone jack. They pair with most Bluetooth phones, laptops and tablets.
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