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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a fully wireless open-ear setup with a long battery and a charging case you can forget about, choose XKDUN Open Ear Headphones; if you need a wired USB-C set that just plugs in and works with no charging at all, choose AHFYCIH Open Ear USB.
• XKDUN Open Ear Headphones — biggest strength: True wireless freedom. Bluetooth 5.3, a 30-hour total playback figure with the case, an LED battery readout, touch controls, and IPX6 sweat protection.
• XKDUN Open Ear Headphones — biggest trade-off: You have to keep it charged, and it only connects over Bluetooth — no wired fallback when the battery is flat.
• AHFYCIH Open Ear USB — biggest strength: Plug-and-play reliability. A USB-C connector, a built-in DAC chip, in-line button controls, and zero charging to think about.
• AHFYCIH Open Ear USB — biggest trade-off: It's tethered to a 1.2 m cord, and it only works with USB-C devices — no Bluetooth, no 3.5 mm jack.
• Pick XKDUN if you want wireless convenience for the gym, runs, and calls.
• Pick AHFYCIH if your devices have USB-C and you'd rather never charge earbuds again.
The XKDUN Open Ear Headphones are built around the idea of keeping your ears open. The earbuds don't go into your ear canals at all — they sit outside on ear hooks. That means you keep hearing traffic, your surroundings, and the person talking to you while music plays. For anyone who runs outdoors or cycles near roads, that awareness is the whole point, not a bonus feature.
On the sound side, XKDUN lists a 16.2 mm titanium-coated dynamic driver, which is a genuinely large diaphragm for this category, plus LDAC support for higher-fidelity Bluetooth audio and a frequency range of 20 Hz to 20,000 Hz. The spec sheet also claims richer bass and "true spatial audio," and the impedance sits at a low 16 ohms. In my opinion, this is the model to look at if your priority is bigger, fuller sound from an open-ear design rather than the thinnest possible earpiece.
Who should buy it: gym-goers, runners, cyclists, commuters, and anyone who wants wireless open-ear audio with real bass and a long total runtime. Who should skip it: people who hate charging accessories, and anyone whose main device lacks Bluetooth.
AHFYCIH Open Ear USB: Who It's For
The AHFYCIH Open Ear USB takes the opposite approach: it removes batteries, pairing, and charging from the equation entirely. It's a wired headset with a USB-C plug, so it draws power from whatever device it's attached to. You plug it into a phone, tablet, or laptop and it simply works — no pairing screen, no low-battery warning, no case to remember.
Compatibility is the headline here. AHFYCIH lists support across a wide swath of USB-C hardware: recent iPhone 15–17 models, iPad Pro and Air, Samsung Galaxy S21 through S26 and the Z Fold/Flip lines, Galaxy Tab, Google Pixel 7 through 10a, OnePlus, and USB-C laptops. If you carry more than one device, that breadth matters — one cable, many machines. There's a built-in DAC chip paired with a dynamic driver for what AHFYCIH describes as 3D lossless stereo, and the frequency range matches the XKDUN at 20 Hz to 20,000 Hz, though impedance is higher at 32 ohms.
The design details are practical rather than flashy. The over-ear hooks adjust across a 15-degree range and are described as ultra-lightweight enough to fit kids through adults, which is a wider fit window than most earbuds offer. Controls live on the cable — buttons for play/pause, track skipping, volume, and calls — and one touch wakes Siri or Android's voice assistant. The cord itself is oxygen-free copper at 1.2 m (3.9 ft), and AHFYCIH includes a cable fixer clip so it doesn't swing around while you move. It ships with a zipper PU storage case and a warranty card, and it's rated for ages six and up.
Who should buy it: students, office and call-center users, gamers, commuters, and anyone with USB-C devices who values zero-maintenance reliability. Who should skip it: people on older phones with Lightning or 3.5 mm jacks, or anyone who wants to move around untethered.
Side-by-Side: Which Should You Choose?
• Best for never charging anything → AHFYCIH Open Ear USB. It runs off your device's USB-C port, so there's no battery to manage at all.
• Best for outdoor awareness while running or cycling → XKDUN Open Ear Headphones. Open-ear fit plus IPX6 sweat and rain resistance, and no cord to snag.
• Best for mixed-device households → AHFYCIH Open Ear USB. iPhone 15–17, iPad, Galaxy S21–S26, Pixel, OnePlus, and USB-C laptops all on one connector.
• Best for bigger-sounding audio → XKDUN Open Ear Headphones. A 16.2 mm titanium-coated driver and LDAC support point to a fuller, higher-fidelity listen.
• Best for calls and voice-assistant control → AHFYCIH Open Ear USB. In-line buttons and one-touch Siri/Android wake-up are quicker than fishing for a touch zone.
• Best for kids, students, and long desk sessions → AHFYCIH Open Ear USB. The 15° adjustable hooks fit a wide age range and won't run out of power mid-lecture.
• Best for working out with no cable in the way → XKDUN Open Ear Headphones. Wireless plus ear hooks is the cleaner setup for movement.
If I were buying one of these for myself, I'd take the XKDUN Open Ear Headphones. In my opinion, the combination of true wireless freedom, a 30-hour total runtime, LDAC support, and the larger 16.2 mm driver makes it the more versatile everyday pair — it handles the gym, the commute, and calls without a cable catching on anything. The AHFYCIH Open Ear USB is the smarter pick only if your life is USB-C and you genuinely never want to think about charging. That's a real advantage, just a narrower one. Check the current price on Amazon before you commit, since that's the one thing that can flip this decision.
FAQ
No. They're wired and draw power through the USB-C connector, so there's no battery inside to charge. That also means no battery to wear out over time — a genuine long-term plus if you dislike maintaining accessories.
No. They're rated IPX6, which covers sweat and rain, but XKDUN specifically warns against swimming and against soaking them in water. Fine for intense workouts, not for the pool.
The AHFYCIH Open Ear USB is listed as compatible with iPhone 15 through 17 series because those use USB-C. Older iPhones with Lightning won't work. The XKDUN connects over Bluetooth 5.3, so it works with any Bluetooth-capable phone, including older iPhones.
Value depends on how you'll use them, so check the current price on Amazon for both. If you want wireless plus a charging case and big-driver sound, XKDUN earns its keep. If you want a set that never needs charging and fits a wide range of USB-C devices, AHFYCIH is the more economical long-term choice in my view.
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