How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 7 min read · Independent comparison
• noot products K22 — biggest strength: a wired 3.5 mm connection with a 5 ft nylon-braided tangle-free cable and a foldable on-ear frame — nothing to charge, nothing to pair.
• noot products K22 — biggest trade-off: it's on-ear, wired-only, and marketed for ages 3–16, so it isn't aimed at adult listeners who want wireless freedom or big over-ear cups.
• JOMILIN B9 — biggest strength: Bluetooth 5.3 wireless with up to 60 hours of playtime per charge, dual-device pairing, and 40 mm drivers in a foldable over-ear design.
• JOMILIN B9 — biggest trade-off: it's an adult-oriented over-ear headphone, so the fit and the wireless-first design are overkill for a small child who just needs a school headset.
• Pick the K22 if you want a low-fuss, corded headset for a kid's iPad, Kindle, school tablet, or a flight.
• Pick the JOMILIN B9 if you want one wireless headphone for commuting, travel, workouts, and calls, with a cable as backup.
The K22 is the definition of a no-drama headset. It connects with a plain 3.5 mm jack, so there's no pairing, no charging, and no app. You plug it in and sound comes out — which is exactly what most parents want when a child grabs a tablet on a car ride or a plane. The 5 ft nylon-braided cable is the standout detail here: braided nylon resists tangling far better than the thin rubber cords on cheap kids' headphones, and five feet gives a child room to move without yanking the plug out of the port. That extra length also matters in a classroom or on a tray table, where you don't want the cord snapping taut every time someone shifts.
On the sound side, the specs are modest and honest: a dynamic driver with a 20 Hz–20,000 Hz frequency range and 32 ohm impedance. That impedance figure is the useful one — 32 ohms is easy to drive, so a phone, tablet, Kindle, or laptop will push it to a reasonable volume without a separate amp. You're not buying the K22 for audiophile bass; you're buying it for reliability. There's volume control on the headset and sound isolation from the on-ear fit, which helps cut down cabin noise or classroom chatter.
The frame folds, which is a genuinely practical touch for a backpack or a seat pocket, and the headset weighs about 6.08 ounces — light enough that a younger kid won't complain about wearing it for a movie. The company backs it with a 24-month hassle-free warranty and states that customer service is easy to reach, which is a meaningful signal for a product likely to be handed to a child.
Who should buy it: parents of kids roughly 3–16 who need a corded headset for school, iPad, Kindle, or travel, and anyone who wants a spare wired headphone that never needs charging.
Who should skip it: adults who want wireless freedom, over-ear cups, or long-session music listening. The K22 is wired-only and on-ear, so it's the wrong tool for a commute or a workout.
The JOMILIN B9 goes the other direction entirely. This is a wireless over-ear headphone built around Bluetooth 5.3, and the headline number is battery: up to 60 hours of playtime on a charge, with a full recharge taking about 2 hours. If you've ever had a headphone die halfway through a long flight, that figure is the whole pitch. Bluetooth 5.3 also brings a more stable, faster connection and — the feature I like most here — the ability to pair with two devices at once and switch between them. In practice that means you can be listening to a playlist on your phone and jump straight to a call on your laptop without re-pairing. The stated range is 10 meters, which is normal for the class and fine for moving around a room or a small apartment.
The audio hardware is a step up in scale: 40 mm drivers with a 20 Hz–20,000 Hz range, and the manufacturer describes a full dynamic range with rich bass and crisp mids. Bigger drivers in an over-ear enclosure generally mean more low-end presence and a wider sense of space than a small on-ear set, and the over-ear fit also helps with passive sound isolation. There's a built-in microphone for hands-free calls and volume control on the earcup. Comfort gets real attention in the design: soft memory-protein ear cushions and a padded headband, plus an adjustable slider so you can dial in the fit. For a long work session or a multi-hour travel day, that padding plus the over-ear shape is a genuine advantage over a small on-ear headphone.
Who should buy it: teens and adults who want one wireless headphone for commuting, travel, workouts, calls, and everyday listening, and who value not charging it constantly.
Who should skip it: a young child who only needs a cheap, corded school headset. The B9's wireless features and adult-oriented fit are more than a small kid needs.
Side-by-Side: Which Should You Choose?
• Best for young kids (roughly 3–16) → noot products K22. Simple wired connection, lightweight, and marketed for that age range.
• Best for battery life → JOMILIN B9. Up to 60 hours per charge versus a wired headset that never needs charging at all — two different answers to the same problem.
• Best for wireless freedom → JOMILIN B9. Bluetooth 5.3 with 10 m range and dual-device pairing; the K22 has no wireless mode.
• Best for calls → JOMILIN B9. It has a built-in microphone and hands-free call handling; the K22 is a corded headset for media and school use.
• Best for travel with a small child → noot products K22. Nothing to pair, nothing to charge, and a 5 ft tangle-resistant braided cable.
• Best for long listening sessions → JOMILIN B9. Over-ear memory-protein cushions and a padded headband are built for hours; the K22 is a light on-ear set.
• Best for durability and cable behavior → noot products K22. The nylon-braided cord is the standout spec on that side.
• Best for warranty coverage → noot products K22. 24 months versus 180 days, based on what each maker states.
• Best for adults who want one headphone for everything → JOMILIN B9. Wireless when you want it, wired when you need it.
If I were buying for myself, I'd take the JOMILIN B9. In my opinion, the combination of Bluetooth 5.3, dual-device pairing, up to 60 hours of playtime, 40 mm over-ear drivers, and a wired fallback makes it the more versatile headphone for a teen or adult who listens across a phone, laptop, and tablet. If I were buying for a young child, I'd take the noot products K22 instead — the wired simplicity, braided 5 ft cable, light 6.08-ounce build, and 24-month warranty fit a kid's school-and-travel life better than any wireless feature would. Match the product to the person, and you'll be happy either way. Check the current price on Amazon before you decide, since that's the one thing that can tip a close call.
The K22. It's wired, lightweight at about 6.08 ounces, folds for storage, and is explicitly marketed for ages 3–16. The B9 is an over-ear wireless headphone aimed at teens and adults.
Yes. It switches to wired mode over the 3.5 mm jack, so you can keep listening even after the roughly 60 hours of playtime runs out. A full charge takes about 2 hours.
Yes. Bluetooth 5.3 lets it pair with two devices and switch between them — handy for moving from a phone playlist to a laptop call without re-pairing.
The noot products K22 lists a 24-month hassle-free warranty, while the JOMILIN B9 lists 180 days. If long-term coverage matters to you, that's a real difference.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.