We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 7 min read · Independent comparison
If you want a wearable translator that turns real-time conversation across dozens of languages into something you can actually follow, choose IAMJOY Language Translation Earbuds; if you need a pair of open-ear everyday earbuds built around spatial audio, long battery life and clear calls, choose RSPK Open Ear Earbuds. These are two very different products that happen to share one thing: an open-ear, clip-or-hook fit. One is a translation tool first and a headphone second. The other is a listening device first, full stop.
• IAMJOY's biggest strength: it's a dedicated two-way translation device, not just earbuds — the CT28 handles up to 163 languages, with 78 languages and 85 accents supported in two-way mode, and promises fast responses around 0.5s.
• IAMJOY's biggest trade-off: battery is modest at 3–4.5 hours per charge, and the translation features depend on the companion app, so it's a phone-tethered tool rather than a standalone gadget.
• RSPK's biggest strength: a listening-first build — 360° spatial audio with head tracking, 14.2mm dynamic drivers, a 4-microphone array with AI wind noise reduction, and up to 36 hours total with the charging case.
• RSPK's biggest trade-off: it does no translation at all — it's a Bluetooth 5.4 audio product, and its value lives in sound, calls, waterproofing and endurance, not language.
• Who each is for: IAMJOY for travelers, students and anyone crossing language barriers; RSPK for commuters, runners and listeners who want immersive audio and long runtime.
The IAMJOY CT28 is, in my opinion, best understood as a translator that happens to be shaped like earbuds. Its core job is real-time, two-way translation — up to 163 languages overall, with 78 languages and 85 accents supported in two-way conversation, covering most countries and regions. Response is fast, around 0.5 seconds, and the app carries no subscription fee, with lifetime free translation. That last point matters: a translation tool you keep paying for is a translation tool you eventually stop using.
Buy it if you travel internationally, study a language, work across borders, or regularly talk with people who don't share your first language — and you want that capability in something you wear rather than hold up. The open-ear C-bridge clip-on design, skin-friendly silicone and a single earbud weighing just 5.1g mean you can keep one in and stay aware of your surroundings, which is exactly what you want in an airport or on a street. It also does triple duty: translation, music playback through a large dynamic driver, and calls over Bluetooth 5.4.
Skip it if your main goal is all-day music. Continuous listening or translation runs 3–4.5 hours, and the Type-C fast-charging case extends total use to about a full day. That's fine for a travel day with breaks, but it isn't a marathon-listening product, and nothing about it is built around spatial audio or noise reduction for calls. Translation is the point here; audio is the bonus.
RSPK Open Ear Earbuds: Who It's For
The RSPK Q79 is the opposite kind of product, and it's honest about it. Everything is tuned toward what you hear. The headline is 360° spatial audio with head-tracking technology and a next-generation spatial audio chip, which is meant to place sound around you rather than pin it to left and right channels. Paired with a 14.2mm dynamic driver, that's a recipe for a wider, more spacious presentation than typical small earbuds manage.
The call side is unusually well specified too. A four-microphone array with an AI wind noise reduction algorithm is claimed to cut noise by 98%, which is the kind of feature that matters when you're taking a call on a windy street or in a noisy café. Bluetooth 5.4 gives a stable connection with a range up to 15 meters, and low latency keeps audio and video in sync for shows and games. Touch controls cover play/pause, track skipping, volume, calls and the voice assistant without reaching for your phone.
Then there's endurance and durability. You get up to 6 hours per charge and up to 36 hours total with the case, plus a smart LED digital display that shows the battery level of the case and both earbuds at a glance. Type-C fast charging tops the case up in about an hour. IP7 waterproofing and the secure ear-hook design — oversized, silicone-coated hooks shaped to fit a range of ears — make this a genuinely active-lifestyle pair.
Side-by-Side: Which Should You Choose?
• Best for real-time translation → IAMJOY Language Translation Earbuds. Up to 163 languages, 78 languages and 85 accents in two-way mode, ~0.5s response, no subscription fee.
• Best for battery life → RSPK Open Ear Earbuds. Up to 6 hours per charge and up to 36 hours with the case, versus 3–4.5 hours plus a day-extending case on the IAMJOY.
• Best for sound quality and immersion → RSPK Open Ear Earbuds. 360° spatial audio with head tracking and a 14.2mm dynamic driver are built for listening, not talking.
• Best for clear phone calls in noisy places → RSPK Open Ear Earbuds. The four-microphone array with AI wind noise reduction is a dedicated call feature; the IAMJOY lists clear calls but not a comparable mic array.
• Best for travel and language learning → IAMJOY Language Translation Earbuds. Photo Translation, Voice Notes, Simultaneous Interpretation and Free Talk modes are made for exactly these situations.
• Best for workouts and wet weather → RSPK Open Ear Earbuds. IP7 waterproofing and secure silicone ear hooks versus a clip-on design with no stated water rating.
• Best for meetings and note-taking → IAMJOY Language Translation Earbuds. Voice Notes converts recordings into meeting-note text, which no audio-only earbud can do.
• Best for wearing all day without ear pressure → both, roughly tied. Both use open-ear designs; IAMJOY leans on a 5.1g clip-on with skin-friendly silicone, RSPK on pressure-free hooks.
If I had to pick one, I'd buy the RSPK Open Ear Earbuds for general use — in my opinion, 36 hours of total battery, IP7 waterproofing, spatial audio and a four-mic call array make it the more broadly useful product for most people, most days. But that's only true if you don't actually need translation. If crossing language barriers is your reason for shopping, the IAMJOY is the only one of the two that does the job, and its mode list is deep enough to justify owning it specifically for that. My honest split: RSPK for listening and life, IAMJOY for language.
Not universally — they do different jobs. IAMJOY translates in real time across up to 163 languages with no app subscription fee. RSPK does no translation but offers spatial audio, IP7 waterproofing and up to 36 hours of battery. Pick by need, not by "better."
No. The Q79 is a Bluetooth 5.4 audio product focused on spatial sound, calls, battery life and durability. It has no translation modes. If translation is your priority, the IAMJOY CT28 is the one to look at.
I can't quote prices here, and both change over time — check the current price on Amazon using the button on this page. On features alone, RSPK gives you more hours and tougher waterproofing; IAMJOY gives you a capability the other simply doesn't have.
RSPK. It carries IP7 waterproofing and a secure silicone ear-hook design intended for active use. The IAMJOY publishes no water-resistance rating, so I wouldn't treat it as a workout or rain earbud.
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