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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-18 · 7 min read · Independent comparison
• 1MORE Fit Open Earbuds — biggest strength: a hook-style open-ear fit that sits outside your ear canal, plus 11 hours per charge (38 hours total with the case), IPX7 water protection and four microphones with AI noise reduction for calls.
• 1MORE Fit Open Earbuds — biggest trade-off: open-ear means no active noise cancellation and no passive isolation. You hear the world, which is the point, but it is not the pick for blocking out a noisy commute.
• RED STAR TEC T-90 — biggest strength: in-ear active noise cancellation, a Music/Gaming mode switch for low-latency audio, and full touch control over calls, volume and your voice assistant.
• RED STAR TEC T-90 — biggest trade-off: battery life is much shorter at around 6 hours per charge, the water rating is IPX6 rather than IPX7, and the warranty is listed at 6 months versus 1 year.
• Who each pick is for: the 1MORE S50 suits runners, cyclists and outdoor athletes who want awareness and long sessions; the RED STAR TEC T-90 suits gym-goers, commuters and gamers who want sealed sound and noise cancelling.
The 1MORE Fit Open Earbuds S50 are built around one idea: keep your ears open. Instead of pushing a tip into your canal, they hook over the ear and rest outside it, held in place by a lightweight memory metal wire. That design is why they exist. On a run, on a bike, on a busy street, you still hear cars, footsteps and people talking to you — and you can keep your music playing the whole time. Nothing about this is a compromise for the sake of style; it is a deliberate safety and comfort choice.
The audio hardware is more serious than the open-ear category usually suggests. Inside is a 13.6 mm DLC (diamond-like-carbon) diaphragm driver, which 1MORE says delivers a 40% power boost over conventional drivers, with a 20 Hz–20,000 Hz range. In practice that means a driver designed to move air with some authority, so open-ear sound does not have to feel thin. On top of that, skin-friendly silicone "directional sound loops" are meant to push audio toward your ear and cut leakage — the classic weak spot of open designs.
Who should buy it: outdoor runners, cyclists, hikers, gym users who want to stay aware of their surroundings, and anyone who finds in-ear tips uncomfortable over long sessions. Who should skip it: anyone whose main goal is blocking out airplane or train noise. Open-ear simply cannot do that, and no spec here claims otherwise.
RED STAR TEC T-90: Who It's For
The RED STAR TEC T-90 BoomSounZ is a conventional in-ear earbud with a rounded silicone tip, and it leans into the features that come with that shape. The biggest one is active noise cancellation. Because the bud seals your canal, ANC has something to work with — it lowers background rumble so voices, music and game audio come through more clearly. If you want your commute, flight or open-plan office to get quieter, this is the design that can actually do it.
The second thing that stands out is the dual-mode audio. Music Mode aims for deep bass; Gaming Mode cuts latency so audio stays in sync with what is happening on screen. For anyone playing mobile games or watching video, that switch matters more than it sounds — lip-sync lag is the usual complaint with cheap wireless buds, and a dedicated low-latency mode is the fix. The dynamic driver covers the same 20 Hz–20,000 Hz range as the 1MORE, and there is an SBC/ANC codec path for the bass-heavy tuning.
Controls are genuinely broad: touch handles calls, media, volume and your voice assistant, so you can adjust almost everything without pulling out your phone. Pairing is standard Bluetooth 5.3 with a 10 m range, and it connects to iOS, Android and laptops. The earbuds ship with S–L ear tips for a custom seal, and the whole package is IPX6 sweatproof — fine for sweat and splashes, though not rated for immersion the way IPX7 is.
The trade-offs are worth being honest about. Battery life is listed at around 6 hours per charge with a 1.5-hour charge time, and the case is a portable charging case rather than a long-haul power bank. The warranty is 6 months. And while the fit is described as secure for intense activity, an in-ear seal is a different sensation from an open hook — some people love it, some find it stuffy over hours. Who should buy it: commuters, gamers, and gym or travel users who want quiet and a locked-in fit. Who should skip it: long-distance runners who need to hear traffic, or anyone who wants a single charge to last an ultra or a full workday.
• Best for battery life → 1MORE Fit Open Earbuds. 11 hours per charge and up to 38 hours with the case, versus roughly 6 hours per charge on the T-90.
• Best for noise cancelling → RED STAR TEC T-90. In-ear active noise cancellation versus the 1MORE's intentionally open design.
• Best for outdoor safety and awareness → 1MORE Fit Open Earbuds. Open-ear means traffic, cyclists and voices stay audible.
• Best for gaming and video → RED STAR TEC T-90. The dedicated Gaming Mode targets low latency and audio sync.
• Best for heavy sweat and rain → 1MORE Fit Open Earbuds. IPX7 outranks the T-90's IPX6.
• Best for fast top-ups → 1MORE Fit Open Earbuds. A 5-minute charge is rated for about 2 hours of listening.
• Best for call clarity in wind and noise → 1MORE Fit Open Earbuds. Four microphones with AI ENC rated to cut background noise by up to 30 dB.
• Best for control flexibility → RED STAR TEC T-90. Touch control covers calls, media, volume and the voice assistant in one place.
• Best for warranty peace of mind → 1MORE Fit Open Earbuds. A 1-year warranty against 6 months.
• Best for a sealed, bass-forward listen → RED STAR TEC T-90. The in-ear tip and ANC tuning are built for that.
In my opinion, the 1MORE Fit Open Earbuds S50 are the safer buy for most people. The 38-hour total playtime, IPX7 rating, 5-minute quick charge and 1-year warranty are concrete advantages, and the open-ear design is genuinely useful if you train outdoors or want to stay aware of your surroundings. I would pick the RED STAR TEC T-90 only if active noise cancellation and a low-latency gaming mode are the two things you care about most — it does those well, but you give up battery life, water resistance and warranty length to get them. Check the current price on Amazon before deciding, since that is the one variable I cannot weigh in for you.
FAQ
Yes. It lists active noise cancellation, and because it is an in-ear bud with a sealing tip, that ANC has a physical seal to work with. The 1MORE S50 does not offer ANC — it uses environmental noise cancellation on the microphones for calls only.
The 1MORE Fit Open Earbuds S50 by a wide margin: 11 hours per charge and up to 38 hours with the case, compared with about 6 hours per charge for the RED STAR TEC T-90. If you dislike charging often, the 1MORE is the easier choice.
The RED STAR TEC T-90 is the better fit, because it has a dedicated Gaming Mode for low latency and audio sync. The 1MORE S50 is built around sports and open-ear listening, with no gaming mode listed.
That depends on what you value. The 1MORE gives you longer battery life, a higher IPX7 water rating, wireless case charging and a 1-year warranty; the T-90 gives you ANC and a gaming mode. Compare the current prices on Amazon and match the feature list to your own routine.
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