We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 6 min read · Independent comparison
If you want a foldable over-ear pair with touch controls, a wired fallback and up to 40 hours per charge, choose Riwbox TX8; if you need an open-ear sport earbud that keeps you visible at night, stays put on long runs and pairs with an app, choose ACEFAST AceFit Pro Open-Ear.
• Riwbox TX8 — biggest strength: a genuine over-ear design with 40 mm dynamic drivers, touch control, Bluetooth 5.3, a TF card slot and a bundled 3.5 mm cable, so it works wirelessly or wired.
• Riwbox TX8 — biggest trade-off: it's a 300 g full-size headphone in a single Pink finish, with no water-resistance rating and no app support.
• ACEFAST AceFit Pro Open-Ear — biggest strength: an open-ear, ear-hook fit at roughly 7.8 g per bud with 40 LED lights for night visibility, Bluetooth 5.4, IP54 and app control.
• ACEFAST AceFit Pro Open-Ear — biggest trade-off: open-ear means no sealed-in isolation, no wired option at all, and the 30-hour figure depends on the charging case.
• Who each is for: Riwbox TX8 for desk, travel, TV and movie use where comfort over hours matters; ACEFAST AceFit Pro Open-Ear for runners, gym-goers and cyclists who want their ears open to traffic.
The TX8 is a classic circumaural headphone built around a 40 mm dynamic driver and a 20 Hz – 20,000 Hz frequency range. Riwbox leans hard on the bass side of that tuning, and the large driver is the reason it can. If you like a warm, full low end for films, games and background music, that's the personality you're buying. The earcups use high-protein foam, and the whole thing folds down via a metal bearing hinge, so it collapses into a bag rather than hanging off your neck.
The control scheme is the part that separates it from most budget over-ears. There's a frosted touch surface on the earcup: one tap plays or pauses and answers or ends a call, and volume is handled by touch too. No fishing for a tiny button with gloves on. Around that you get Bluetooth 5.3 with a stated 10 m range, a TF card slot for local playback, and a tangle-free nylon 3.5 mm cable in the box for anything that won't pair — an in-flight entertainment system, an older TV, a desktop that hates Bluetooth. Battery is a 400 mAh cell rated at 40 hours, recharging over USB-C in about 2 hours.
Buy it if you want one headphone for travel, TV, music, office and gym-adjacent use, you value a foldable over-ear with physical comfort over hours, and you like having a wired option as insurance. Skip it if you run outdoors at night, sweat heavily, or need your ears open to your surroundings — there's no water-resistance rating here, no LED safety lighting, and no companion app. Note the single Pink colourway too; if you want a neutral black or grey, this isn't it.
The AceFit Pro is a different animal entirely. It's an open-ear ear-hook bud — nothing enters your ear canal — held on by an ultra-thin 0.7 mm nickel-titanium memory wire hook that ACEFAST says adapts to any ear shape, glasses wearers included. At roughly 7.8 g per bud with supramolecular liquid silicone coating, this is designed to disappear on your head during a long run. The shell mixes aerospace-grade titanium alloy, high-polymer plastic and skin-friendly silicone, which is a sensible material list for something that gets sweat on it daily.
The audio approach is unusual for the price bracket: a 20 mm three-magnet super-linear speaker with up to 0.5 mm amplitude, tuned for bass that open-ear designs normally can't deliver. Realistically, open-ear still means you hear the world around you — that's the whole point — but ACEFAST has clearly tried to close the gap on low end. The 40-LED night safety mode is the standout feature: the buds glow and stay visible from over 10 m, which matters a lot if you run or cycle on roads after dark.
Connectivity is Bluetooth 5.4 with dual-device switching, and there's app control for touch customisation. The transparent charging case is slim at 1.08 in and has a built-in LED display so you can see battery and charging status at a glance. Battery is 30 hours with the 500 mAh case, and a 5-minute top-up gives about 2 hours of playback — genuinely useful before an unplanned session. IP54 covers sweat and splashes, and four mics with ENC handle calls.
Buy it if you train outdoors, run in low light, wear glasses, hate the plugged-ear feeling, or want to hear traffic and training partners. Skip it if you want deep isolation on a plane or train, need a wired fallback, or prefer the sealed, full-size feel of an over-ear.
• Best for battery life → Riwbox TX8. 40 hours on a 400 mAh cell, versus 30 hours on the AceFit Pro, and the ACEFAST figure includes the case.
• Best for night-time safety → ACEFAST AceFit Pro Open-Ear. 40 LED lights and visibility from over 10 m is something the TX8 simply doesn't offer.
• Best for travel and TV → Riwbox TX8. Over-ear cups, foldable build, 3.5 mm cable and a TF card slot make it the more flexible seat-back companion.
• Best for running, gym and cycling → ACEFAST AceFit Pro Open-Ear. IP54, 7.8 g buds, memory-wire hooks and open-ear awareness are built for movement.
• Best for calls in noisy places → ACEFAST AceFit Pro Open-Ear. Four mics with ENC beat a single built-in mic on paper.
• Best for wired reliability → Riwbox TX8. Bluetooth 5.3 plus a bundled 3.5 mm cable means it never becomes a paperweight when pairing fails.
• Best for newer wireless tech → ACEFAST AceFit Pro Open-Ear. Bluetooth 5.4 and dual-device switching edge out 5.3 on paper.
• Best for app-based tweaking → ACEFAST AceFit Pro Open-Ear. Touch customisation via app; the TX8 is fixed out of the box.
For most people reading this comparison, I'd buy the Riwbox TX8. In my opinion it's the more versatile object: it covers travel, TV, music, games and desk work in one foldable package, gives you 40 hours of runtime and a wired escape hatch, and the touch controls are genuinely convenient. The AceFit Pro is the better tool, but only for a narrower job — outdoor training in the dark, with your ears open. If that's your life, buy the ACEFAST. If you want one headphone that does almost everything, buy the TX8.
FAQ
No. It's an open-ear design with no noise control listed, so ambient sound comes through by design. That's a safety feature when running, but a downside on a plane or a noisy commute.
Yes. Riwbox includes a tangle-free nylon 3.5 mm cable, so you can keep listening with a flat battery on anything with a headphone jack.
The ACEFAST AceFit Pro Open-Ear. The 40 LED lights and over-10 m visibility are made for exactly that, and IP54 covers sweat. The TX8 has no water-resistance rating and no lighting.
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