How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a simple, no-fuss adapter that turns any USB-C phone or tablet into a wired headphone device, choose Dem.Lorida USB Type C; if you need actual headphones built for kids with a hard volume ceiling for school and travel, choose Bywulanda Upgrade USB Type. These two products share a USB-C connector and almost nothing else — one is a tiny audio adapter, the other is a full on-ear headphone. Here is how I'd decide between them.
• Dem.Lorida USB Type C — biggest strength: it converts a USB-C port into a 3.5mm female jack, so you can keep using the wired headphones you already own, and it comes as a 4-pack with a 12-month warranty.
• Dem.Lorida USB Type C — biggest trade-off: it produces no sound on its own. If you have nothing with a 3.5mm plug, it does nothing for you.
• Bywulanda Upgrade USB Type — biggest strength: it's a complete pair of wired USB-C kids' headphones with a 94dB volume limit, a built-in mic and a foldable on-ear design.
• Bywulanda Upgrade USB Type — biggest trade-off: it's a single pair of headphones, not a multi-pack, and the 94dB ceiling is deliberately conservative — some older listeners will want more output.
• Pick Dem.Lorida if you want to reuse your own wired earbuds or headphones on a USB-C device.
• Pick Bywulanda if you're buying headphones for a child and want the volume capped out of the box.
The Dem.Lorida adapter is a small USB-C male to 3.5mm female connector with a short nylon-braided cable. It measures roughly 2.76 x 0.2 x 0.2 inches and weighs about 0.03 kg, so it lives in a pocket or a bag pouch without you noticing it. Inside, Dem.Lorida uses a DAC smart chip, which is the part that actually converts the digital audio signal from your phone into something an analog headphone can play. That chip is also what the brand credits for the noise reduction and higher-fidelity output.
The compatibility list is the real selling point. It covers a huge spread of USB-C hardware — Samsung Galaxy models from the S8 era up through the S24+, Note 20 Ultra and Note 10/9/8, Google Pixel 8 Pro down through Pixel 2, several iPad Pro and iPad Air sizes, OnePlus, Moto Z, Huawei and MacBook Pro. If your phone dropped the headphone jack and you still love a particular pair of wired headphones, this is the bridge. The nickel-plated connectors are designed to resist oxidation and survive repeated plugging, and the braided cable is meant to take bending without fraying.
Who should skip it? Anyone who doesn't already own 3.5mm headphones, and anyone who wants a microphone on the cable for calls — the sheet lists a single USB-C port and a female 3.5mm jack, nothing about an inline mic. It's also not a USB-C to USB-C cable; it's audio only. And if you only need one adapter rather than four, the multi-pack is more than you asked for, though spares do go missing. Check the current price on Amazon before deciding whether the four-pack math works for you.
The Bywulanda Upgrade USB Type is a completely different animal: wired on-ear headphones with a USB-C plug, sold in Dark Blue and aimed squarely at kids. The headline feature is the 94dB safe volume limit. That's a hard ceiling on how loud the headphones can go, and for a parent whose child uses a tablet for school, videos or games, that single number is the reason to buy. The 40mm dynamic drivers cover a 20 Hz to 20,000 Hz range with 30 ohm impedance, which is an easy load for a phone or tablet to drive — a sensible spec for this category.
Build-wise, it's an on-ear design with rounded earpieces, faux leather and plastic construction, and it folds. At 140 g it's light enough that younger kids shouldn't complain about wearing it. There's a built-in microphone and button-based volume control, with touch listed as a control method as well, so the child can handle calls or adjust levels without reaching for the tablet. The listed themes — movie, music, school, study, trip, video game — tell you the intended use case honestly: everyday, on-the-go listening rather than critical listening.
Where it gives ground: the 94dB limit is a safety feature, not a flaw, but it does mean the headphones won't get loud for an adult using them as a stopgap. Noise control is sound isolation only, not active noise cancellation. And because it's a wired USB-C headphone, it's locked to USB-C sources — it won't plug into a laptop's 3.5mm jack or an older device. It ships in rigid packaging with a user manual and carries a 2-year warranty, which is a longer coverage window than most accessories in this space.
• Best for reusing existing wired headphones → Dem.Lorida USB Type C. It's the only one of the two that outputs to a 3.5mm jack.
• Best for child-safe listening → Bywulanda Upgrade USB Type. The 94dB volume limit is the deciding spec.
• Best for families sharing one purchase → Dem.Lorida USB Type C. Four adapters means four devices covered at once.
• Best for school and study use → Bywulanda Upgrade USB Type. Wired USB-C connection, built-in mic, on-ear fit, foldable for a backpack.
• Best for travel → Bywulanda Upgrade USB Type. It folds, weighs 140 g, and needs no separate headphones.
• Best for keeping spares → Dem.Lorida USB Type C. The multi-pack solves the lost-adapter problem before it happens.
• Best for warranty length → Bywulanda Upgrade USB Type. Two years versus twelve months.
• Best for a device-agnostic audio fix → Dem.Lorida USB Type C. Its compatibility list spans phones, tablets and laptops from several brands.
In my opinion, the right pick depends entirely on what problem you're solving, and that's rare enough to say plainly. If you're an adult with a USB-C phone and a favorite pair of wired headphones, I'd buy the Dem.Lorida USB Type C — it's the cheaper path to good sound and the four-pack means you're never stranded. If you're buying for a child, I'd buy the Bywulanda Upgrade USB Type without hesitation; the 94dB limit, the 40mm drivers and the 2-year warranty make it the more responsible gift. I'd only cross-shop them if you're outfitting a household where both needs exist — in which case, honestly, buy both.
The listed compatibility covers Samsung Galaxy models from the S8 through the S24+ and Note series, plus Google Pixel 2 through Pixel 8 Pro, along with several iPad, OnePlus, Huawei and MacBook Pro models. If your device has a USB-C port and you're plugging in 3.5mm headphones, it's designed for exactly that.
Yes — the sheet lists a sensitivity of 94dB as a safe volume limited design. That's the ceiling, so you don't need to police the volume slider. Just note it also means the headphones stay quiet by adult standards.
They're not really comparable on value because they do different jobs. Dem.Lorida gives you four adapters for people who already own wired headphones; Bywulanda gives you one complete pair of child-safe headphones. Compare the current prices on Amazon against how many people in your house need to be covered.
Only if that device has a USB-C port. It's a wired USB-C headphone with no 3.5mm option and no wireless mode, so anything with a traditional headphone jack is out. For those devices, the Dem.Lorida adapter isn't the answer either — it goes the other direction.
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