If you want a straightforward 3.5mm connection and a built-in audio-sharing jack, choose EarFun K1; if you need a USB-C wired connection for compatible devices, choose EarFun K3. For hunting, neither is designed as hearing protection or a specialized outdoor headset, but the choice between their connectors and features is clear.
EarFun K1 vs EarFun K3 at a Glance
• EarFun K1 strength: 3.5mm wired connection, cable microphone, in-line controls, and a second jack for sharing audio. Trade-off: It needs a device with a 3.5mm audio jack.
• EarFun K3 strength: USB-C wired connection and a listed 40 mm driver. Trade-off: It is compatible with Type-C audio devices, not USB-C charging ports.
• Both are over-ear, foldable wired headphones for kids, with a stated frequency range of 20 Hz–20 kHz and no noise control.
• Pick K1 for 3.5mm devices, calls or online study, and listening with a sibling or friend.
• Pick K3 for a compatible USB-C tablet, Chromebook, or PC and a foldable design made with recycled materials.
The EarFun K1 is a wired, over-ear kids’ headphone built around a familiar 3.5mm connection. That makes it a practical match for devices with a headphone jack, including the listed categories of tablets, Chromebooks, PCs, and handheld consoles. It also has a microphone on the cable, plus in-line controls for functions such as play, pause, calls, and track selection.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Its extra 3.5mm sharing jack is the K1’s most distinctive feature. A child can connect another pair of headphones for shared listening without needing a splitter. For online study or a long car ride with a sibling, that small detail may matter more than a connector upgrade.
I’d choose the K1 for a family whose devices still use 3.5mm audio and who wants a microphone and sharing option in one wired set. Skip it if the intended device relies on USB-C audio and has no headphone jack. The listed specifications don’t identify noise control or a hearing-protection feature, so I wouldn’t treat it as protective equipment for hunting or other loud environments.
The EarFun K3 uses a USB-C connector for wired audio. It is intended for compatible Type-C devices such as tablets, Chromebooks, and PCs. The product information specifically says it is not compatible with USB-C charging ports, so check that the device’s port supports audio rather than assuming any USB-C port will work.
K3’s listed driver size is 40 mm, and its frequency range is 20 Hz–20,000 Hz. Like the K1, it is an over-ear wired kids’ headphone with a foldable design and no noise control. Its materials are described as including recycled and eco-friendly materials, a point that may appeal to families considering material choices alongside everyday usability.
I’d consider the K3 when USB-C audio is the deciding factor, particularly for a child or teen using a compatible device without a 3.5mm jack. I’d skip it if you need the K1’s audio-sharing jack or want the listed cable microphone and in-line call controls. The K3’s supplied details do not establish those K1-style features, so they shouldn’t be assumed.
Side-by-Side: Which Should You Choose?
• Best for a device with a 3.5mm headphone jack → EarFun K1. Its wired connection is designed for that familiar port.
• Best for sharing one audio source with another listener → EarFun K1. It has a second 3.5mm jack for another pair of headphones.
• Best for cable-based online study or calls → EarFun K1. Its cable includes a microphone and in-line controls.
• Best fit when recycled materials are a priority → EarFun K3. Its materials are described as recycled and eco-friendly.
• Best match if a listed 40 mm driver matters to you → EarFun K3. That driver size is specified for this model.
• Best for a hunting-related purchase → Neither as hearing protection. The sheets list no noise control or protective rating for either set. I’d choose between them only for ordinary wired listening on a compatible device, not as a way to protect hearing in the field.
• Best for a child who wants to share audio on a trip → EarFun K1. Its sharing jack avoids the need for a splitter.
I’d buy the EarFun K1 for a child who uses 3.5mm devices, especially if a microphone, cable controls, or shared listening would be useful. I’d choose the K3 instead when USB-C audio compatibility is the main requirement.
For hunting, I would not call either one the best sports earbuds for hunting, the best rechargeable headphones for hunting, or the best earphones for hunting: both are wired kids’ headphones, and neither is specified as hearing protection. My recommendation is the K1 for everyday use with compatible devices, not for protecting hearing outdoors.
The K3 uses a USB-C connector for audio with compatible devices. The K1 uses a 3.5mm wired connection. K3’s USB-C connection is not intended for a USB-C charging port unless that port supports audio.
The K1 has a second 3.5mm jack for connecting another pair of headphones without a splitter. The K3’s listed features do not include an audio-sharing jack.
Neither product’s listed specifications identify noise control. I would not buy either expecting active noise cancellation or hearing protection.
Check the current price on Amazon using the page’s button, then compare it with the connector and features you need. The K1 offers a microphone, in-line controls, and a sharing jack; the K3 is the USB-C option for compatible audio devices.
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