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If you want a pair of true wireless stereo earbuds with a charging case, long battery life and a proper stereo soundstage, choose SGNICS ZTE GABB Z2; if you need a single, minimal open-style earpiece for running that you can wear for hours without thinking about it, choose Keenso GD28.
• SGNICS ZTE GABB Z2 — biggest strength: a full stereo TWS setup with 13mm dynamic drivers, 7 hours per charge, 31 hours total with the case, and Bluetooth 5.3 with a 12-metre range.
• SGNICS ZTE GABB Z2 — biggest trade-off: it's a two-earbud system, so there's a case to carry, two buds to keep track of, and it's built for general listening rather than hard sweaty workouts.
• Keenso GD28 — biggest strength: a single in-ear earpiece with an ergonomic fit and IPX4 sweat-and-rain protection — the least fussy thing you can put in your ear for a run.
• Keenso GD28 — biggest trade-off: it's one earpiece, not a stereo pair, and there's no charging case or multi-day battery figure given, so long listening sessions depend on how you charge it.
• Who each pick is for: SGNICS for commuters, students and anyone who wants stereo music and calls all day. Keenso for runners and single-ear users who want one lightweight bud and nothing else.
The SGNICS ZTE GABB Z2 is a conventional true wireless stereo set: two in-ear buds plus a charging case, in black, with an ABS+PC shell. The audio side is the headline. Each bud uses a 13mm compound diaphragm dynamic driver covering 20 Hz to 20,000 Hz, which is the full audible range. In my opinion that size of driver is why the listing leans on "full and rich in details" — a bigger diaphragm generally moves more air, which usually means a warmer low end than the tiny drivers in budget buds. Whether it suits your taste is your call, but the hardware is aimed at music rather than voice-only use.
Battery is the other strong card. The buds run about 7 hours on their own, and the case recharges them three to four times, giving a stated 31 hours total when both buds are in use. That's a full working week of commutes for plenty of people. Bluetooth 5.3 handles the connection, with lower power draw and a claimed stable link out to 12 metres — enough to leave your phone on a desk and walk to the kitchen. Opening the case auto-reconnects to the last device; the very first pairing is manual, then it's automatic from then on.
Controls are touch-based: tap to answer calls, skip tracks, wake a voice assistant. There's an ENC noise-cancelling mic for calls, which is about cleaning up your voice for the person on the other end rather than muting the world around you — worth knowing if you were expecting active noise cancellation. Each bud weighs 3.8g and sits in the ear canal, and the package includes a cable, ear cushions and a manual. The IPX4 rating covers splashes and sweat, not submersion.
Buy it if you want stereo music, hands-free calls and a case you can forget in a bag for days. Skip it if you specifically want a single earpiece, or if you need buds that survive being dunked rather than splashed.
The Keenso GD28 is the opposite philosophy. It's a single open-ear-style wireless earbud in pink, designed to sit in one ear and stay there. The ergonomic shape is the whole point — it's built to fit snugly without causing discomfort so you can keep it in for long stretches. If you've ever pulled a bud out after an hour because your ear felt hot and full, that's exactly the problem this design is trying to solve.
Two features stand out beyond the fit. First, the leakproof earhole: Keenso's claim is that it stops sound spilling out to people near you, which matters if you listen on a train, in a shared office or in a quiet waiting room. Second, HiFi stereo surround sound with noise reduction — note that "stereo" here describes the processing of a single earpiece, not a left-right pair. You get one channel of audio, and the noise reduction is there to keep your content clear rather than to block the outside world. Honestly, for running that's the right trade: you want to hear traffic and other people.
Control is deliberately simple. One multifunction button, blind-pressable, handles music and calls without you looking at it — the sort of thing that works with cold hands or gloves. IPX4 covers sweat and rain, which is the rating you want for sport. There's no charging case mentioned and no battery figure given, so plan on charging it between sessions. It also ships with a 90-day manufacturer warranty. Buy it if you run, cycle or want one ear free. Skip it if you want stereo music, a case, or a multi-day battery number you can plan around.
• Best for stereo music → SGNICS ZTE GABB Z2. Two buds, 13mm dynamic drivers, full 20 Hz–20,000 Hz range.
• Best for battery life → SGNICS ZTE GABB Z2. 7 hours per charge, 31 hours total with the case.
• Best for running and sport → Keenso GD28. Single earpiece, ergonomic long-wear fit, IPX4 for sweat and rain.
• Best for calls on the move → SGNICS ZTE GABB Z2. ENC noise-cancelling mic plus touch controls for answering.
• Best for wearing one ear only → Keenso GD28. That's literally the design.
• Best for wireless range and connection stability → SGNICS ZTE GABB Z2. Bluetooth 5.3 with a 12-metre range.
• Best for private listening in shared spaces → Keenso GD28. The leakproof earhole is aimed at exactly that.
• Best for people who lose small things → Keenso GD28. One earpiece and no case to misplace.
I'd buy the SGNICS ZTE GABB Z2. For most people, most of the time, a stereo pair with a case is simply more useful — 31 hours of total playtime, Bluetooth 5.3, a 13mm driver and a mic that works for calls covers commuting, studying and working. The Keenso GD28 is the better tool for one specific job: running or any activity where you want one ear open and zero fuss. If that's your job, buy the Keenso. If you're not sure, buy the SGNICS.
FAQ
can i wear waterproof headphones in the shower
With IPX4, no — I wouldn't. IPX4 means protection against splashing water and sweat, not jets or immersion. The SGNICS ZTE GABB Z2 and Keenso GD28 both carry IPX4, so rain, sweat and a splash are fine, but standing under a shower head is beyond what the rating covers.
Not these two — they're water-resistant, not waterproof. IPX4 is the lowest tier that specifically addresses water splashing, so both the SGNICS ZTE GABB Z2 and the Keenso GD28 will shrug off sweat and light rain. Submerging either one is outside the rating.
is the Keenso GD28 stereo or just one ear
It's a single earpiece. The listing describes HiFi stereo surround sound processing, but physically there's one bud, so you're hearing one channel. For running and awareness that's an advantage; for music you want a SGNICS ZTE GABB Z2.
which one should i get for running
The Keenso GD28, in my opinion. It's designed around a long-wear ergonomic fit, it's IPX4 for sweat and rain, and the blind-press single button is easy to use mid-run. The SGNICS is the better all-rounder, but it isn't built specifically for sport.
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