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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 simple, no-charging pair of wired earbuds that works with virtually any 3.5mm jack device, choose YNR 4; if you need a feature-packed wireless set with real-time AI translation and a touchscreen charging case, choose BEARTAIN NE20.
• YNR 4 biggest strength: Wired 3.5mm plug means zero pairing, zero battery, zero latency — it works the moment you plug it in, on iPhone, iPad, iPod, Samsung, Google and any 3.5mm device.
• YNR 4 biggest trade-off: It's a basic audio tool. No Bluetooth, no app, no smart features — just sound, a mic and inline volume buttons.
• BEARTAIN NE20 biggest strength: A 3-in-1 wireless package — real-time translation across 135 languages, clear calls, hi-fi music, plus an LCD touchscreen case that runs 15+ functions without a phone.
• BEARTAIN NE20 biggest trade-off: It's Bluetooth-only (no 3.5mm jack), so any device must support wireless audio, and the earbuds themselves run about 8 hours before needing the case.
• Who YNR 4 is for: anyone with older or wired-only gear, students, kids, and people who want cheap, dependable, plug-and-play earbuds.
• Who BEARTAIN NE20 is for: travelers, language learners, and business users who want translation, calls and music in one wireless kit.
The YNR 4 is built around one idea: keep it simple. It's a four-pack of in-ear wired earbuds with a 3.5mm jack, a built-in microphone, and physical volume buttons on the cable. The housing is aluminum, the drivers are dynamic with a 20 Hz–20 kHz range and 32-ohm impedance, and the tips are ergonomically shaped to seal your ear canal. That seal is what gives you passive noise cancellation — no electronics needed. It just blocks outside sound by physically plugging your ear.
What it does best is compatibility. The 3.5mm jack is the universal port, and the data sheet calls out iPhone, iPad, iPod, Samsung, Google devices, MP3 players and music speakers. That means the same pair works on your phone, your laptop, a school Chromebook, an old iPod in a drawer, a car aux input, or an airplane seat jack. No pairing menu. No "forget this device." No dead battery on a long flight. If you've ever fumbled with Bluetooth settings while a device refused to connect, the appeal here is obvious.
Who should buy it: students, commuters, parents buying for kids, and anyone who wants a spare pair in a bag, at a desk, or in the car. The inline controls answer calls and adjust volume with a push, and the mic handles phone conversations fine. The trade-offs are real, though. It's wired, so you're tethered to the device. There's no wireless mode, no app, no translation, no touchscreen. And if your phone has no headphone jack, you'd need an adapter. If you want a wireless, feature-rich experience, skip this and look at the NE20.
The BEARTAIN NE20 is a completely different animal. These are Bluetooth earbuds with silicone tips, touch controls, and a charging case that doubles as a smart hub. The headline feature is AI translation: 135 languages, under 0.5-second translation delay, and accuracy stated up to 98%, working on both iOS and Android. You get seven translation modes — hands-free, dual-ear, live photo translation, AI conversation, conference, dual mode (music and translation at once), and voice memos with automatic transcription.
Then there's the case. It has a color LCD touchscreen giving you 15+ functions without touching your phone: music control, equalizer, voice dialing, alarm, stopwatch, and even a remote camera trigger. Battery life is listed at 60 hours total (that's with the case), the buds alone average about 8 hours, and a full charge takes 1.5 hours. There's also a built-in positioning chip, so the app can show the last known location on a map and ring the buds if you lose them — genuinely useful for people who constantly misplace earbuds.
Who should buy it: travelers, international students, people in multilingual workplaces, and anyone who takes calls and listens to music on the go. The audio side is solid too — dynamic drivers, 20 Hz–20,000 Hz, matching the YNR 4's range. The trade-offs: it's Bluetooth only, no 3.5mm jack, so your device needs wireless audio. The buds' 8-hour runtime is fine but means you'll rely on the case for all-day use, and translation features depend on the companion app. If you just want cheap wired buds for a school laptop, this is overkill.
• Best for universal device compatibility → YNR 4. The 3.5mm jack plugs into nearly anything, including devices that don't do Bluetooth.
• Best for battery-free, always-ready use → YNR 4. No charging, no pairing, works instantly.
• Best for travel and language barriers → BEARTAIN NE20. 135 languages, sub-0.5-second translation, seven modes.
• Best for calls and music without your phone → BEARTAIN NE20. The touchscreen case controls music, EQ, alarms and more.
• Best for kids, students and spare pairs → YNR 4. Four earbuds per pack, simple controls, nothing to configure.
• Best for losing-proof convenience → BEARTAIN NE20. The positioning chip and ring-to-find feature are genuinely handy.
• Best for long listening sessions → BEARTAIN NE20. Up to 60 hours with the case versus a wired tether.
• Best for zero-latency audio and no interference → YNR 4. Wired means no Bluetooth dropouts or audio delay.
In my opinion, the right pick depends entirely on what "all devices" means to you. If it means "any device with a headphone jack, anywhere, with no fuss," I'd buy the YNR 4 — it's the definition of plug-and-play and it never runs out of power. If it means "all my modern wireless devices, plus translation and smart controls," I'd choose the BEARTAIN NE20, because its feature set is in a completely different league. For most people who want genuinely universal compatibility with the least friction, I recommend the YNR 4.
Turn off Bluetooth on each device and remove the headphone entry from its saved device list, or hold the pairing button until the indicator flashes to reset the connection. The YNR 4 doesn't need this — unplugging the 3.5mm jack disconnects it instantly.
On most phones, open Bluetooth settings, tap the headphone name, and choose "Forget" or "Unpair" for each device it was paired to. Bluetooth earbuds like the BEARTAIN NE20 may also need a factory reset via their app or touch controls, while the wired YNR 4 stores no pairings at all.
Go to each device's Bluetooth menu and select "Unpair" or "Forget device" for the headset. If you're switching between many devices, clearing the list prevents the buds from auto-reconnecting to the wrong one — something the NE20's app can help you manage.
Some Bluetooth earbuds support multipoint, which lets them stay connected to two devices at the same time so you can take a call on one and hear audio from the other. The BEARTAIN NE20 connects over Bluetooth, so check its app for connection options, while the YNR 4 is wired and plays from whichever single device it's plugged into.
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