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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want maximum battery life, over-ear comfort and a wired USB-C ANC backup, choose OneOdio Focus A6; if you need pocket-sized earbuds with adaptive noise cancelling, dual drivers and real-time translation, choose EarFun Air Pro 4+.
• OneOdio Focus A6 — biggest strength: marathon endurance, with up to 75 hours of Bluetooth playback (40 hours with ANC on) and a 10-minute charge that returns roughly 10 hours of playtime.
• OneOdio Focus A6 — biggest trade-off: it's a full-size over-ear set at 295 g, so it's not something you'll tuck into a jeans pocket, and it relies on physical buttons rather than touch controls.
• EarFun Air Pro 4+ — biggest strength: a hybrid dual-driver setup (10 mm dynamic plus a balanced armature) with adaptive ANC up to 50 dB, 6-mic AI call handling and built-in translation across 100+ languages.
• EarFun Air Pro 4+ — biggest trade-off: battery life is measured in hours, not days — up to 12 hours per charge and 54 hours with the case in normal mode, dropping to 8 and 36 hours with ANC on.
• Who should buy which: pick the OneOdio Focus A6 if you want one headphone for long flights, commutes and desk work; pick the EarFun Air Pro 4+ if you want discreet earbuds for calls, travel and everyday carry.
The Focus A6 is built around one idea: never make the user think about charging. OneOdio rates it at up to 75 hours in Bluetooth mode and 40 hours with ANC active, and a 10-minute top-up is quoted at roughly 10 hours of playback. A full charge takes about 2.5 hours. For anyone who has ever landed in another time zone with a dead headset, that math matters more than any single spec.
The noise cancelling side is a 5-mic hybrid ANC system that OneOdio says blocks up to 98% of low-frequency noise, reaching a depth of -48 dB. That's the kind of figure aimed squarely at engine drone, cabin hum and the steady rumble of a train or an open-plan office. Calls lean on a dual-mic ENC array, which is a step up from the single-mic setups you often find at this tier — useful for meetings, remote work and voice assistants where your voice needs to sit on top of background chatter.
Buy it if you want a single pair for long-haul travel, all-day desk sessions and wired backup — and you don't mind carrying something substantial. Skip it if you want something that disappears into a pocket, prefer touch gestures, or need earbuds you can wear at the gym without a headband.
EarFun Air Pro 4+: Who It's For
The Air Pro 4+ goes the other direction: everything miniaturized, nothing left out. It's an in-ear bud weighing 53 g for the set, built around a hybrid driver system — a 10 mm composite dynamic driver paired with a FeatherBA balanced armature — with an 11-degree angled alignment that EarFun says reduces high-frequency attenuation. In plain terms, that combination is how you get both weight in the low end and detail up top from something this small.
The chip story is the real differentiator. Qualcomm's QCC3091 SoC powers certified Snapdragon Sound with aptX Lossless, alongside LDAC, LC3 and LE Audio support. If your phone supports the higher-end codecs, this is a bud that can actually take advantage of them. Noise cancelling is adaptive hybrid using EarFun's QuietSmart 3.0, which adjusts in real time and is rated to cancel up to 50 dB. Calls run through a 6-mic array with AI beamforming and Qualcomm cVc 8.0 suppression — the most aggressive call setup in this comparison.
Then there's the feature you won't find on the OneOdio: real-time AI translation across 100+ languages through the EarFun Audio App, with both instantaneous and face-to-face modes. Battery is up to 12 hours per charge and 54 hours with the case in normal mode, or 8 and 36 hours with ANC on, and a 10-minute charge yields about 3 hours. Bluetooth 6.0 brings multipoint for two devices at once plus Auracast for shared and public audio broadcasts.
A few practical notes worth knowing before you buy: in-ear detection is disabled by default in the latest firmware and has to be switched on in the app, and EarFun recommends updating firmware for the best experience. The warranty is 18 months. There's no headphone jack — this is wireless only, charged via the included cable and case. Buy it if you want maximum features per gram: adaptive ANC, top-tier codecs, strong call clarity and translation. Skip it if you dislike in-ear tips, want a wired listening option, or need multi-day battery without the case.
• Best for battery life → OneOdio Focus A6. Up to 75 hours Bluetooth, 40 with ANC, versus 54 and 36 for the EarFun with its case.
• Best for the longest single stretch without charging → OneOdio Focus A6. One charge versus one charge, it's 75 hours against 12.
• Best for noise cancelling depth on paper → EarFun Air Pro 4+. Adaptive ANC rated to 50 dB, slightly ahead of the OneOdio's -48 dB — and it adjusts in real time.
• Best for calls → EarFun Air Pro 4+. A 6-mic AI beamforming array is simply more hardware than a dual-mic ENC system.
• Best for sound quality with a hi-res source → EarFun Air Pro 4+. Dual drivers plus aptX Lossless, LDAC, LC3 and LE Audio gives you more ways to get the most out of a capable phone.
• Best for comfort over long sessions → OneOdio Focus A6. Over-ear cups spread pressure instead of sealing inside your ear canal.
• Best for travel and everyday carry → EarFun Air Pro 4+. Earbuds plus a charging case fit where a 295 g over-ear headphone never will.
• Best for a wired fallback → OneOdio Focus A6. USB-C handles audio and charging, and ANC still works in wired mode.
• Best for something genuinely unusual → EarFun Air Pro 4+. Real-time translation across 100+ languages is a feature the OneOdio simply doesn't offer.
If I had to pick one, I'd buy the EarFun Air Pro 4+. In my opinion, the combination of adaptive ANC, a dual-driver setup with full hi-res codec support, a 6-mic call array and built-in translation covers more of what most people actually do day to day — commuting, calls, travel, listening from a phone. The OneOdio Focus A6 is the better answer for one specific person: someone who wants over-ear comfort and refuses to charge anything more than once a week. That's a real need, but it's a narrower one. For everyone else, the Air Pro 4+ is the more versatile pick.
Not quite. EarFun rates its adaptive ANC at up to 50 dB versus the OneOdio's -48 dB, and it adjusts in real time. Both are strong; the OneOdio's advantage is that its ANC also works in wired USB-C mode.
The OneOdio Focus A6 wins clearly: up to 75 hours in Bluetooth mode and 40 hours with ANC on, against 12 hours per charge and 54 hours with the case for the EarFun. The EarFun's advantage is that the case recharges it on the go.
Yes — via the EarFun Audio App it supports real-time and face-to-face translation across 100+ languages. EarFun notes the app should be updated to the latest version for it to work properly.
They're over-ear, with circular earcups, and weigh 295 g. That's the trade-off for the metal headband, larger drivers and the multi-day battery.
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