How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want an affordable wired kids' headphone for school and USB-C tablets, choose Bywulanda Upgrade USB Type; if you need a hard protective case for your Sony or JBL over-ear headphones, choose Perfcaze Hard Headphone Case. These two products solve completely different problems — one is the headphone, the other is the box you carry it in. Here's how to decide which one actually belongs in your cart.
• Bywulanda Upgrade USB Type — biggest strength: a wired USB-C on-ear headphone built for kids, with a 94dB volume limit and a foldable, lightweight frame (0.17 kg).
• Bywulanda Upgrade USB Type — biggest trade-off: no microphone, and it only works with devices that have a USB-C port — no 3.5mm fallback.
• Perfcaze Hard Headphone Case — biggest strength: a hard EVA shell with a PU skin, shockproof and pressureproof, sized for the Sony WH-CH520 and JBL Tune Live 670NC.
• Perfcaze Hard Headphone Case — biggest trade-off: it's a case only — no headphones included, and it's tied to specific over-ear models.
• Who each pick is for: Bywulanda → parents buying a first pair of headphones for a kid with a USB-C tablet or laptop; Perfcaze → someone who already owns the listed Sony or JBL headphones and wants to stop crushing them in a backpack.
The Bywulanda Upgrade USB Type is a wired, on-ear kids' headphone with a USB-C connector. That single spec tells you most of what you need to know: it plugs into anything with a USB-C port, and it plugs into nothing else. No adapter, no 3.5mm jack, no Bluetooth pairing. For a kid's tablet or a school-issued laptop with USB-C, that's actually a plus — one cable, nothing to pair, nothing to charge.
The design choices point at the same buyer. A 94dB volume limit is the headline feature, and it's the reason a parent would pick this over a generic pair of cheap headphones. The plastic on-ear/over-ear frame weighs 0.17 kg, and it folds, so it can disappear into a school bag. Sound is handled by a 30 ohm dynamic driver covering 20Hz–20,000Hz — a normal, full-range spec for a headphone in this class, not a bass monster and not a studio tool. There's a volume control with touch operation and sound isolation, which matters more than you'd think on a school bus.
Who should buy it: parents or students who want a low-hassle wired headphone for a USB-C tablet, laptop, or travel bag, and who specifically want the volume ceiling. The Light Pink color and the kid-focused marketing make it an easy gift for a younger child.
Perfcaze Hard Headphone Case: Who It's For
The Perfcaze Hard Headphone Case is exactly what the name says: a case. No headphones, just the shell. It's built around two specific models — the Sony WH-CH520 and the JBL Tune Live 670NC — so if you own one of those, this is a drop-in fit rather than a gamble.
The materials are the story. The outer shell is hard EVA, described as shockproof and pressureproof, which is the difference between a case that protects your headphones from a backpack full of textbooks and a soft pouch that just keeps the dust off. The outside is wrapped in PU skin that's water resistant, dustproof, and fingerprint resistant — wipe it with a paper towel and it looks new again. Inside, the design fixes the headphone in place so the earcups don't rattle against each other and scratch.
Portability is handled with a strap: carry it by hand, hang it on a hook, or drop it in a larger bag. The zipper is smooth and matched in color to the case, which is a small cosmetic detail but a nice one if you care how your gear looks. Weight is 0.24 kg — light enough to forget you're carrying it.
Who should buy it: anyone who owns the Sony WH-CH520 or JBL Tune Live 670NC and wants real protection instead of tossing them loose into a bag. Students, commuters, and frequent travelers get the most out of it.
Who should skip it: anyone without those specific headphones. Fit is the whole point of a case, and this one is scoped to two models. Also note the warranty description is listed as none, so you're buying on the strength of the materials, not on a coverage promise. And if you haven't bought headphones yet, buy the headphones first — a case with nothing to put in it isn't much use.
• Best for a kid's first headphone → Bywulanda Upgrade USB Type. The 94dB limit and folding frame are built for exactly that.
• Best for protecting headphones you already own → Perfcaze Hard Headphone Case. Hard EVA, shockproof, pressureproof.
• Best for USB-C tablets and laptops → Bywulanda Upgrade USB Type. Wired USB-C, no pairing, no charging.
• Best for backpacks, lockers and travel → Perfcaze Hard Headphone Case. The strap and hard shell are made for being shoved around.
• Best if you need a microphone → neither. Bywulanda has no mic, and Perfcaze is a case, not a headphone.
• Best if you own a Sony WH-CH520 or JBL Tune Live 670NC → Perfcaze Hard Headphone Case. Compatibility is named directly.
• Best if you want something to clean easily and stay looking new → Perfcaze Hard Headphone Case. The PU skin wipes down.
• Best if you're buying one thing and you're not sure which → decide whether you need a headphone or a place to put one. That answer picks the product for you.
In my opinion, these two aren't really competitors — they're two halves of the same setup, and your choice comes down to what's missing from your bag right now. If you're shopping for a child who uses a USB-C tablet and you want a safe, simple, wired headphone, I'd buy the Bywulanda Upgrade USB Type. If you already own the Sony WH-CH520 or JBL Tune Live 670NC and you're tired of finding them scratched at the bottom of a backpack, I'd buy the Perfcaze Hard Headphone Case. Buy the headphone first if you have neither; buy the case first if protection is the problem.
FAQ
how to connect c port headphones
Plug the USB-C connector directly into a USB-C port on your device — phone, tablet, or laptop. The Bywulanda Upgrade USB Type is a wired USB-C headphone, so there's no pairing or charging step. If your device only has a 3.5mm jack or Lightning port, this headphone will not work with it.
If your Mac has a USB-C port, a USB-C headphone like the Bywulanda Upgrade USB Type plugs straight in and is recognized as an audio output. Just set it as the output device in your sound settings. Keep in mind this model has no microphone, so it's for listening only, not for calls.
how to connect mobile headphones
For a wired USB-C headphone, connect the cable to your phone's USB-C port and audio routes automatically. The Bywulanda Upgrade USB Type works this way on USB-C phones. If your phone has no USB-C port, look for the 3.5mm version instead.
how to pack headphones
Use a hard case rather than a soft pouch. The Perfcaze Hard Headphone Case is built for the Sony WH-CH520 and JBL Tune Live 670NC, with a hard EVA shell, an interior that holds the headphone in place, and a strap for carrying or hanging. Wipe the PU exterior clean when it picks up dust.
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.
See also: CONVELIFE DNA Replacement Earpads vs Bywulanda Upgrade USB Type, yoygerty Upgrade USB Type vs JEDAMMA 2: USB C Headphones, Bywulanda USB Type C vs JLab: Foldable Headphones