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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 kid-safe wired headphone that works with the widest range of devices — tablets, laptops, school Chromebooks, in-flight entertainment systems — choose EarFun K3; if you need a USB-C-only plug for a modern phone, tablet or laptop with no headphone jack, choose Botesty Sound USB C Headphones.
• EarFun K3 — biggest strength: A 3.5 mm jack plus an 85/94 dBA volume limit, a built-in HD mic, and 40 mm dynamic drivers in a foldable over-ear frame. It plugs into almost anything with a standard headphone port.
• EarFun K3 — biggest trade-off: No USB-C option and no active noise cancellation, so it is the wrong pick for a device that only has a Type-C port.
• Botesty Sound USB C Headphones — biggest strength: A native USB-C plug with in-line buttons for play/pause, track skip and calls — a clean fit for phones, tablets and laptops that dropped the 3.5 mm socket.
• Botesty Sound USB C Headphones — biggest trade-off: USB-C only. The manufacturer explicitly notes these are not Bluetooth and not 3.5 mm, so they will not fit older gear or airline jacks without the right adapter.
• Pick EarFun K3 if: you want one pair of corded kids' headphones that travels between school devices, tablets and a family laptop.
• Pick Botesty Sound if: every device your kid uses has a USB-C port and you want buttons on the cable rather than on the ear cup.
The EarFun K3 is a corded over-ear headphone built around one idea: safe listening for kids without gutting the sound. The 85/94 dBA volume limit is the headline feature. In practice that means you can set a ceiling that keeps the output at a level generally considered safer for young ears, with a second, louder mode for noisier environments like a car or a plane cabin. It is a physical limit built into the headphone, not a setting buried in an app — which matters, because kids do not manage settings.
The audio side is not an afterthought. A 40 mm dynamic driver, 32 ohm impedance and a 20 Hz–20,000 Hz frequency range are the numbers you would expect from a general-purpose wired headphone, not a toy. The 110 dB sensitivity figure tells you these are easy to drive — a tablet or a school laptop will push them without straining. The 20 ms latency figure matters more than it sounds: with a wired connection there is effectively no lag between mouth and ear, so video calls and online classes stay in sync. The built-in HD microphone and remote call control handle exactly that use case.
Where the K3 earns its keep is flexibility. The 3.5 mm jack is the universal standard. School Chromebooks, iPads with the right connection, a family laptop, a handheld game console, an airplane seat-back screen — all of them speak 3.5 mm. The frame folds for storage, the ear cups are over-ear with a plastic/leather/metal build, and the package includes the headphones and a user manual. It is also backed by an 18-month warranty, which is a longer coverage window than most kid-focused audio gear.
Who should buy it: parents who want one pair of headphones that survives the jump between home, classroom and travel, with a volume ceiling they can trust. Who should skip it: anyone whose kid's primary device is a phone or tablet with no headphone jack and no adapter on hand. In that case the K3 simply has nowhere to plug in.
The Botesty Sound USB C Headphones solve a narrower but very real problem. Modern phones, tablets and thin laptops increasingly ship with a USB-C port and nothing else. If that describes your household, a 3.5 mm headphone is dead weight. This model plugs straight into a Type-C port — no dongle, no adapter to lose in a backpack.
The feature list is aimed at school and remote learning. There is a built-in microphone, and the in-line control buttons let a kid play or pause audio, skip tracks, and answer or end calls and video chats without touching the screen. For a child on a video lesson, that is genuinely useful: the controls sit on the cable where small hands can find them. The manufacturer also lists sound isolation as a noise-control feature, which is a passive design trait of the over-ear fit rather than active cancellation — it cuts some surrounding noise, but do not expect the hush of an ANC headphone.
The volume limit is the same 85/94 dB approach as the EarFun, so the safety philosophy is comparable. Impedance is listed at 32 ohm, matching the K3, which again points to a headphone that a normal tablet or laptop can drive without an amp. The build is an over-ear design in dark blue with a plastic enclosure, aimed at kids and teens, and it carries a 12-month warranty.
The critical thing to understand before buying: this is a USB-C headphone, full stop. The product notes state plainly that it is not Bluetooth and not a 3.5 mm plug-in headphone. That is not a flaw — it is the whole point of the product — but it does mean you should check every device your kid will use before committing. A USB-C-to-3.5 mm adapter can bridge the gap on older hardware, but that is an extra part to keep track of.
Who should buy it: families whose phones, tablets and laptops are USB-C throughout, and who want cable-mounted controls for online classes. Who should skip it: anyone who still relies on 3.5 mm jacks, wants wireless freedom, or needs the headphone to work on an airplane seat-back screen without an adapter.
Side-by-Side: Which Should You Choose?
• Best for USB-C-only devices → Botesty Sound USB C Headphones. If there is no headphone jack in the house, this is the one that plugs in without a dongle.
• Best for cable-mounted controls → Botesty Sound USB C Headphones. In-line buttons handle play/pause, track skip and calls directly.
• Best for easy-to-drive audio → a tie. Both list 32 ohm impedance, so both run fine off a tablet or laptop.
• Best for a proven driver spec → EarFun K3. The 40 mm dynamic driver and 20 Hz–20,000 Hz range give you a concrete audio picture; Botesty Sound does not publish driver size or frequency range.
• Best for call and class audio → a tie. Both include a built-in microphone and call control.
• Best for longer coverage → EarFun K3. The listed warranty runs 18 months versus 12 months for Botesty Sound.
• Best for travel and storage → EarFun K3. The foldable frame packs down; the Botesty Sound sheet does not list a folding design.
I would buy the EarFun K3. The reason is not that it sounds better on paper — the published specs are broadly comparable — but that it is the safer bet for a kid's headphone, because the 3.5 mm jack works with essentially every device a child will encounter, from a classroom laptop to an airplane screen. The 40 mm driver, the foldable over-ear frame and the longer 18-month warranty round out a package that is easier to live with over several school years. I would only switch to the Botesty Sound USB C Headphones if I were certain that every device in the house is USB-C and I wanted the controls on the cable. If price is the deciding factor for you, check the current price on Amazon for both before you commit.
how to use wired headphones with iphone
It depends on the iPhone's port. The EarFun K3 uses a 3.5 mm jack, so on a Lightning iPhone you would need a Lightning-to-3.5 mm adapter, and on a USB-C iPhone you would need a USB-C-to-3.5 mm adapter. The Botesty Sound USB C Headphones plug directly into a USB-C iPhone with no adapter at all — that is their main advantage here.
how to wired headphones work
A wired headphone carries the audio signal as an electrical current from the device's output port, through the cable, to a driver inside the ear cup that converts it back into sound. The EarFun K3 does this over a 3.5 mm analog connection with a 40 mm dynamic driver; the Botesty Sound does it over a USB-C connection and adds in-line buttons that send control signals back to the device.
how to fix wired headphones no sound
Start with the simplest checks: confirm the plug is fully seated, test the headphone on a second device, and make sure the correct output is selected in your sound settings. On the Botesty Sound USB C Headphones, also verify you are using a USB-C port and not an older USB-A or 3.5 mm socket, since the manufacturer states it is USB-C only. If the in-line buttons have a mute position, check that too.
how to use wired headphones
Plug the connector into a matching port and the headphone becomes the active audio output — no pairing, no charging, no battery to think about. With the EarFun K3 you use the 3.5 mm jack plus the remote call control; with the Botesty Sound USB C Headphones you use the Type-C plug and the in-line buttons to play, pause, skip tracks and take calls.
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See also: MIDOLA Volume Limited 85/110dB vs TSYUCXH Noise Cancelling Over, ONEPLUS Buds 4 vs BYZMODLX Earbuds, iDreaming Binaural Beats Sleep vs GUATTIR Mini Invisible Earbuds, SteelSeries Arctis 1 vs Kanto H1