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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 wireless, light-up pair that doubles as a fun gift and works with almost anything in the house, choose Riwbox WT-7S; if you need a no-fuss, wired school headphone that just plugs in and works, choose ELECDER i37.
• Riwbox WT-7S biggest strength: Bluetooth 5.x wireless freedom, a 60-hour battery rating, a built-in mic, LED lights that pulse with the music, and a hybrid wired/wireless design with a 3.5 mm cable included.
• Riwbox WT-7S biggest trade-off: It's the heavier and more complex option, and the LED show is exactly the kind of feature a classroom teacher will not want.
• ELECDER i37 biggest strength: Dead-simple, plug-and-play wired audio over a gold-plated 3.5 mm jack, with a foldable, adjustable frame and a 4.9 ft tangle-free cord built for backpacks.
• ELECDER i37 biggest trade-off: It's wired only, so there's no Bluetooth, no mic, no lights, and no battery — you're tethered to the device at all times.
• Who each is for: Riwbox WT-7S is for kids, teens and students who want wireless freedom, fun looks and long battery life; ELECDER i37 is for school-age kids who need a reliable, lightweight, wired pair for Chromebooks, tablets and travel.
The WT-7S is the "fun" pick. Its defining feature is the LED strip on both ear cups that flashes up and down with the beat of whatever's playing. In my opinion that single design choice tells you everything about the target buyer: a kid or teenager who wants headphones that look like a toy and feel like a gadget at the same time. If your child has ever asked for headphones because they look cool, this is that product.
Under the flashiness, the spec sheet is surprisingly solid. There's a 40 mm dynamic driver, 32 ohm impedance, a 20 Hz–20 kHz frequency range and Bluetooth with a rated range up to 100 feet. The battery is the headline number: a 1-hour charge time against a 60-hour average playtime rating. You also get an ON/OFF switch for the LED effect, so you can kill the light show and stretch that battery even further — a genuinely thoughtful touch. There's a built-in microphone for calls and voice chat, and push-button controls on both ear cups for track skipping and volume.
So who should skip it? Anyone shopping for a school-issued device setup where the teacher wants silence and zero distractions. The LED lights, the Bluetooth pairing, the charging cable — all of it is friction in a classroom. And if your child is on the younger, smaller side, 280 g over-ear is a lot of headphone. In my opinion, the WT-7S is a home-and-travel headphone first, and a school headphone a distant second.
ELECDER i37: Who It's For
The ELECDER i37 goes the opposite direction and does it well. This is a wired, on-ear headphone with a 3.5 mm jack, and that's the whole point. There's no pairing, no charging, no battery to run flat halfway through a math lesson. You plug it into a Chromebook, tablet, laptop, smartphone, DVD player or Kindle and it works.
The details are aimed squarely at kids and school life. The headband folds and adjusts, the ear pads are cushioned, and the cord is a 4.9 ft tangle-free design — long enough that a kid can shift around in a car seat or pass the tablet across an airplane row without yanking the plug out. The ear cups are shaped to help kids learn left/right orientation, which is a small thing that matters a lot in a classroom full of seven-year-olds.
Safety and materials get real attention here too. The build uses lead-free and BPA-free materials, and the on-ear cushion design reduces ambient noise — classroom chatter, airplane drone — while still letting some awareness of surroundings through. For a parent, that last part is the selling point: enough isolation to focus, not so much that a kid is sealed off from the world around them.
On audio, the i37 runs 32 ohm impedance with 93 dB sensitivity and a dynamic driver. It's an on-ear, plastic-bodied, red headphone weighing just 160 g — roughly 120 g lighter than the Riwbox. It's covered by a 1-year warranty with 24/7 email support.
Side-by-Side: Which Should You Choose?
• Best for wireless freedom → Riwbox WT-7S. Bluetooth with a rated 100 ft range and a saved pairing means no cable and no re-pairing hassle.
• Best for battery life → Riwbox WT-7S. A 60-hour average playtime rating off a 1-hour charge, extendable further by switching the LEDs off.
• Best for school and classroom use → ELECDER i37. Wired, quiet, no pairing, no charging, no lights to distract the class.
• Best for the lightest fit on small heads → ELECDER i37. At 160 g it's the lighter headphone by a wide margin.
• Best for calls and voice chat → Riwbox WT-7S. It's the only one of the two with a built-in microphone.
• Best for travel with kids → ELECDER i37. The 4.9 ft tangle-free cord and foldable frame are made for seat pockets and backpacks, and there's nothing to charge at the airport.
• Best for a gift → Riwbox WT-7S. The pulsing LEDs and purple finish make it the more exciting unboxing for a kid or teen.
• Best for plug-into-anything simplicity → ELECDER i37. Gold-plated 3.5 mm jack, universal compatibility, zero setup.
If I were buying for a younger child heading to school with a Chromebook, I'd pick the ELECDER i37. It's lighter, it's wired so it never dies mid-lesson, the cord is long and tangle-free, and the materials and sound-isolation design are clearly aimed at exactly that job. If I were buying for a kid or teen who wants headphones for home, gaming, TV and travel — and who'd actually get a kick out of the light show — I'd pick the Riwbox WT-7S. The 60-hour battery, Bluetooth range, built-in mic and wired backup mode make it the far more versatile headphone. In my opinion, that's the honest split: the i37 is the school tool, the WT-7S is the fun all-rounder. Check the current price on Amazon before you commit, then match it to how your kid will actually use them.
FAQ
No. The i37 is a wired headphone with a 3.5 mm jack and no wireless technology at all. If you need Bluetooth, the Riwbox WT-7S is the one that has it.
The ELECDER i37. It plugs straight into a Chromebook or tablet, never needs charging, has no LED distraction, and its on-ear cushion is designed to reduce classroom noise while keeping some awareness of surroundings. The Riwbox WT-7S can technically be used wired, but its lights and Bluetooth make it a home headphone first.
The spec sheet rates it at 60 hours average playtime with a 1-hour charge time. You can stretch that further by switching off the LED blinking effect with the ON/OFF light control.
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