We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-28 · 5 min read · Independent comparison
If you want a wired, school-ready pair that folds flat and stays put on a child's head, choose ELECDER i37; if you need a wireless, sweatproof behind-the-head headset for running and hands-free calls, choose itayak Behind.
• ELECDER i37 biggest strength: A wired 3.5 mm on-ear design built specifically for kids — foldable, adjustable, lead-free and BPA-free, with a long 4.9 ft tangle-free cord.
• ELECDER i37 biggest trade-off: It is fully wired with no Bluetooth and no microphone, so it can't pair with a phone or take calls wirelessly.
• itayak Behind biggest strength: Bluetooth 5.0 wireless freedom with roughly 11 hours of music playtime, a built-in microphone, IPX5 sweatproofing and a tiny 37 g frame.
• itayak Behind biggest trade-off: No 3.5 mm jack at all, so it only works with Bluetooth devices — and the behind-the-head fit won't suit everyone.
• Who each is for: Choose ELECDER i37 for school kids, tablets and Chromebooks; choose itayak Behind for adult workouts, running and wireless calls.
The ELECDER i37 is a wired on-ear headphone aimed squarely at children and teens. Everything about the design points that direction: foldable, adjustable headbands, cushioned ear pads, and a 4.9 ft tangle-free cord that's meant to survive being stuffed into a school backpack or an airplane seat pocket. The L-shaped gold-plated 3.5 mm plug works with Chromebooks, tablets, laptops, smartphones, DVD players and Kindles, so there's no pairing, no charging and no app to manage.
What it does best is durability and simplicity. The on-ear cushions provide sound isolation rather than true active noise cancellation, which is a deliberate choice — it dulls classroom chatter and engine drone while still letting a child hear what's happening around them. For a parent, that's the whole point. The materials are lead-free and BPA-free, the ear cups are shaped to help younger users learn left from right, and ELECDER backs it with a 1-year warranty plus 24/7 email support. At 160 g it's light enough for a petite adult too, which the description openly acknowledges.
Who should buy it: parents equipping a child for school, homework, road trips or flights, and anyone who wants a cheap, no-fuss wired pair that folds into a suitcase. Who should skip it: anyone who wants Bluetooth, a microphone for calls, or a wireless experience — the i37 has none of those, by design.
The itayak Behind is a completely different animal. It's a wireless behind-the-head headset with a wrap-around band that sits behind your neck rather than over your crown. The Bluetooth 5.0 chipset pairs with phones, tablets and other Bluetooth devices within roughly 33 feet, and the one-step fast pairing means you power it on, find "itayak-910" in your Bluetooth list, and you're connected.
Where it shines is movement. At about 37 g it barely registers, and the behind-the-head design plus secure earbuds is built so nothing falls out mid-stride. The IPX5 sweatproof rating means sweat won't kill it during a run or a gym session. Battery life is the standout number: roughly 11 hours of music, 14 hours of talk time and 200 hours of standby on a single charge, which comfortably covers a full day out. There's a real microphone for hands-free calls, passive noise cancellation to filter background sound, and five physical push buttons for volume, track skipping, play/pause, call handling, and even summoning Siri or Google Assistant.
Who should buy it: runners, cyclists, gym-goers, warehouse and delivery workers — anyone who wants light wireless audio that stays put and takes calls. Who should skip it: kids who need a wired pair for a school Chromebook, and anyone whose device lacks Bluetooth. There's no 3.5 mm jack here at all.
• Best for kids and school → ELECDER i37. Kid-sized fit, lead-free/BPA-free materials, and a wired jack that works with school Chromebooks without pairing.
• Best for workouts and running → itayak Behind. IPX5 sweatproofing, 37 g, and a behind-the-head fit that resists falling out.
• Best for battery life → itayak Behind. Roughly 11 hours of music and 14 hours of talk time versus a wired set that needs no battery at all.
• Best for calls → itayak Behind. It has a built-in microphone; the i37 has no mic.
• Best for zero-hassle reliability → ELECDER i37. No charging, no pairing, no dropouts — plug in and go.
• Best for travel with a child → ELECDER i37. It folds flat and slips into a carry-on or backpack.
• Best for hands-free commuting → itayak Behind. Bluetooth 5.0 with about 33 ft of range and physical buttons you can use by feel.
• Best for device compatibility → Depends on your source. ELECDER i37 needs a 3.5 mm jack; itayak Behind needs Bluetooth.
If I had to pick one, I'd buy the itayak Behind for myself — in my opinion the combination of Bluetooth 5.0, ~11 hours of playtime, a microphone, IPX5 sweatproofing and a 37 g frame makes it the more versatile everyday headset for an adult who moves around. But that's a personal call, not a universal one. If the buyer is a child heading to school with a Chromebook, I'd recommend the ELECDER i37 instead — for that job, a wired, kid-safe, foldable pair is simply the smarter tool, and wireless would be a liability rather than a feature. Check the current price on Amazon before deciding, since that's the one variable that can tip a close call.
FAQ
Yes. It has a built-in mic for hands-free calls, plus five push buttons for volume, track control, play/pause and activating Siri or Google Assistant.
That's exactly what it's designed for. It's IPX5 sweatproof, weighs about 37 g, and the behind-the-head wrap-around fit keeps the earbuds secure so they don't fall out.
The ELECDER i37. It's built for children with a foldable adjustable headband, lead-free and BPA-free materials, on-ear cushions that reduce classroom noise while keeping awareness, and a cord long enough for a desk setup.
No. It's passive and wired, so there's no battery to charge. The itayak Behind does need charging and gives roughly 11 hours of music per charge.
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