We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 8 min read · Independent comparison
If you want a simple, kid-proof wired headphone for school, travel and shared family devices, choose ELECDER i37; if you need a wireless adult earbud with real-time translation and serious noise cancelling, choose Relxhome NE20. These two products sit in completely different corners of the headphone world, and that is exactly why the comparison matters. One is built around a cable, a folding frame and a child's school bag. The other is built around an app, a touchscreen charging case and a business traveler's itinerary. Let me walk you through what each one actually is, so you can stop second-guessing and pick the right one for your situation.
• ELECDER i37 biggest strength: A foldable, adjustable on-ear design with a 4.9 ft tangle-free cord, gold-plated 3.5 mm jack and a 1-year warranty — plug-and-play on Chromebooks, tablets, laptops and phones with zero pairing and zero charging.
• ELECDER i37 biggest trade-off: It is wired only. There is no Bluetooth, no active noise cancelling and no microphone-based translation — it is a straightforward listening headphone, and the on-ear cups are sized for kids and petite adults rather than large heads.
• Relxhome NE20 biggest strength: A wireless Bluetooth earbud with a 60-hour battery spec, 48 dB active noise cancellation, an LCD touchscreen case, 45 ms low-latency mode and AI translation across a long list of languages through the companion app.
• Relxhome NE20 biggest trade-off: It leans on software and connectivity. Translation needs the app plus a stable network and Bluetooth link, there is no 3.5 mm jack at all, and the feature set is aimed at adults, not children.
• Who each pick is for: ELECDER i37 is for parents, students and anyone who wants a durable, no-fuss wired headphone for kids. Relxhome NE20 is for adult travelers, commuters and professionals who want wireless audio plus translation and noise cancelling in one device.
The ELECDER i37 is a kids' on-ear headphone, and the design choices make that obvious the moment you read the spec sheet. The headband folds and adjusts, the ear pads are cushioned, and the cable runs 4.9 ft with a tangle-free build — a length that makes sense for a school backpack, an airplane seat pocket or a car ride where a child is passing a tablet back and forth. The earcups are shaped to help younger users learn which side is left and which is right, which is a small detail that matters a lot in a classroom full of kids.
What it does best is simplicity. There is a gold-plated 3.5 mm jack and an L-shaped stereo plug, so it connects to Chromebooks, tablets, laptops, smartphones, DVD players and e-readers without any pairing, app or battery. That is the whole point: nothing to charge, nothing to sync, nothing to troubleshoot five minutes before the school bus arrives. The materials are described as lead-free and BPA-free, which is the kind of thing a parent actually cares about when a product is going to live against a child's ears for hours. The on-ear cushion design reduces some ambient noise — classroom chatter, airplane drone — while still letting a child hear what is happening around them, which is a sensible safety trade-off rather than full isolation.
On the audio side, the sheet lists a 32 ohm impedance, a dynamic driver and a 20 Hz – 20,000 Hz frequency range, which is a standard full-range spec for everyday listening. The 5.6-ounce weight keeps it light enough that a kid will not complain about it on a long trip. There is a 1-year warranty and 24/7 email support behind it, which tells you the brand expects this thing to get knocked around.
Relxhome NE20: Who It's For
The Relxhome NE20 is a completely different animal. These are wireless in-ear earbuds aimed at adults, and the headline feature is AI-powered real-time translation. The sheet lists multiple translation modes, including voice notes, camera translation, free speak, and a headphones-plus-phone mode, working through the brand's app. That last part is important: translation runs through the app, and it needs a stable network and Bluetooth connection to work properly. So this is not a magic offline interpreter — it is a connected tool for travelers, business meetings and multilingual families.
The second pillar is noise cancelling. The spec sheet claims 48 dB of active noise cancellation, described as blocking the large majority of distractions. For a noisy commute, an open-plan office or a study session in a busy café, that is the feature that earns its keep. It pairs with a 6-microphone array for calls, which the sheet frames around keeping conference calls clear even in windy outdoor conditions.
Battery is the third pillar, and the numbers are generous on paper: a 60-hour average battery life figure, with 6–8 hours per charge in the earbuds themselves and the rest coming from the case. For a cross-country flight or a day of back-to-back calls, that removes the "where is my charger" anxiety entirely. The case itself has an LCD touchscreen you use to control music, calls and translation, set alarms, toggle noise modes, and even play small stress-relief games. It is a genuinely unusual design choice, and it is the kind of thing that either delights you or feels like overkill.
Connectivity is Bluetooth with a listed 10-meter range, and the sheet references Bluetooth 5.4 in the style field. There is no 3.5 mm jack, so you are fully committed to wireless. The earbuds are in-ear with plastic and silicone construction, listed as adult-oriented, and they weigh next to nothing. Audio specs mirror the ELECDER at 32 ohms, a dynamic driver and 20 Hz – 20,000 Hz, though "HiFi sound" is the brand's own framing rather than a measured claim.
Who should skip it? Anyone buying for a young child — these are adult earbuds with small parts and a feature set a kid has no use for. Also skip it if you want a zero-setup, zero-app, zero-charging experience. If your priority is a rugged wired headphone that survives a school year, the NE20 is the wrong tool.
• Best for young kids and school use → ELECDER i37. Foldable, adjustable, lead-free and BPA-free materials, sized for children and petite adults.
• Best for wireless freedom and travel → Relxhome NE20. Bluetooth, no cable, a 60-hour battery spec and a compact charging case.
• Best for noise cancelling → Relxhome NE20. Active noise cancellation is listed at 48 dB, versus the i37's passive sound-isolation cushions.
• Best for real-time translation → Relxhome NE20. Multiple app-based translation modes across a very long language list.
• Best for zero setup and no charging → ELECDER i37. Plug the 3.5 mm jack into anything and it works — no app, no pairing, no battery.
• Best for calls and meetings → Relxhome NE20. A 6-microphone array and voice prioritization are built specifically for clear calls.
• Best for durability around children → ELECDER i37. A folding frame, a tangle-free cord and a 1-year warranty suit rough daily handling.
• Best for a device that does more than play audio → Relxhome NE20. The touchscreen case adds alarms, noise-mode toggling and translation controls.
In my opinion, these two products should not really be competing for the same buyer, so the honest answer is: pick based on the person, not the spec sheet. If I were buying for a child heading to school or a family trip, I would buy the ELECDER i37 — it is the simpler, tougher, more age-appropriate choice, and the wired design removes every charging and pairing headache a parent deals with. If I were buying for myself as an adult traveler or commuter, I would buy the Relxhome NE20, because the translation modes, active noise cancelling and long battery life are features I would actually use. Check the current price on Amazon before you commit, since that is the one variable that can flip a close call.
The ELECDER i37, clearly. It is designed as a kids' on-ear headphone with lead-free and BPA-free materials, a foldable adjustable frame and a wired connection a child cannot lose or fail to pair. The NE20 is listed as an adult product with in-ear tips and app-based features a young child does not need.
Does the Relxhome NE20 need an internet connection to translate?
Yes. Translation runs through the brand's app and requires a stable network plus a Bluetooth connection to function properly. Poor connectivity can cause delays or failures, so it is not a fully offline interpreter. Plan for data or Wi-Fi when you rely on it abroad.
Yes. It uses a gold-plated 3.5 mm jack with an L-shaped plug, so it connects to smartphones, tablets, laptops, Chromebooks, PCs, DVD players and e-readers that have a standard headphone port. Devices without a 3.5 mm port would need their own adapter, which is not included in the listed items.
The Relxhome NE20, by a wide margin, because it is the only one with a battery at all. Its spec sheet lists a 60-hour average battery life with 6–8 hours per charge in the earbuds and the remainder from the case. The ELECDER i37 is wired and never needs charging, which is a different kind of convenience rather than a battery advantage.
Based on the listed specs, yes. It advertises 48 dB active noise cancellation and a 6-microphone array with voice prioritization for calls, plus a 45 ms low-latency mode for gaming. Those are the features that matter most in loud, busy environments.
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