If you want wireless earbuds with long battery life and bass-forward sound, choose Anker Soundcore; if you need wired, over-ear headphones for a child, choose EarFun K3. For fishing, I’d lean toward the Anker because it is wireless and has a compact case, while the K3 is a wired kids’ headphone designed for compatible USB-C devices—not a fishing earbud.
• Anker Soundcore P20i: Wireless in-ear design, up to 10 hours of playtime per charge and 30 hours with the case; trade-off: no listed noise control.
• EarFun K3: Foldable, wired over-ear headphones with 40 mm drivers; trade-off: the cable and USB-C connection limit how you can use them.
• Anker Soundcore is for adults who want pocketable wireless listening, adjustable EQ and a bass-forward sound profile.
• EarFun K3 is for kids or teens who need wired headphones for compatible tablets, Chromebooks or computers.
• For fishing: Anker is the more practical fit of these two, but neither is described as an open-ear model or as specifically designed for fishing.
The Soundcore P20i is a true wireless earbud set with 10 mm dynamic drivers, Bluetooth 5.3 and touch controls. Its advertised strength is bass-forward listening, and the companion app adds 22 EQ presets along with customizable controls. If I wanted a small wireless set for music on a walk, a commute or a day with a bag already full, that mix would make sense to me.
Battery life is a standout on paper: Anker lists up to 10 hours per charge and up to 30 hours when including the charging case. A 10-minute quick charge is listed to provide two hours of playtime. The case is compact and has an attached lanyard, while the earbuds can be used one at a time. Those details make the P20i the more convenient option here for someone who wants to carry less and avoid a headphone cable.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-17 · 6 min read · Independent comparison
The EarFun K3 is a different kind of product altogether. It is a wired, over-ear headphone made for kids and teens, with 40 mm dynamic drivers and a foldable design. Its listed connection is USB-C, and the product information names compatible Type-C devices such as tablets, Chromebooks and PCs. That makes it a more natural match for a child’s schoolwork or travel listening than for someone looking for wireless earbuds.
A key distinction is that the listing notes the USB-C connector is not compatible with a USB-C charging port. In other words, a USB-C-shaped connector does not automatically mean it will work with every USB-C device or port. I would check the intended device’s audio compatibility before choosing the K3. Its wired setup avoids the need to manage earbud charging, but it also means the listener is physically connected to the device.
The K3’s over-ear fit, foldability and stated kid-focused construction suit families looking for a portable set of headphones for learning and entertainment. The product description also identifies recycled and eco-friendly materials. For a child who needs a volume-limited headphone, though, I would verify that feature directly: the provided specifications do not state a volume limit, despite that phrase appearing in the product title. It is not a direct substitute for wireless earbuds, and it is not presented as a fishing-specific or open-ear option.
Side-by-Side: Which Should You Choose?
• Best for wireless listening → Anker Soundcore. The P20i connects over Bluetooth 5.3; the K3 is wired.
• Best for longer stated battery life → Anker Soundcore. It lists up to 10 hours per charge and up to 30 hours with the case. The K3 has no battery-powered playback specification.
• Best for adjusting sound preferences → Anker Soundcore. Its app offers 22 EQ presets and customizable touch controls.
• Best for a compatible USB-C tablet or computer → EarFun K3. Its wired USB-C connection is intended for compatible devices, but it should not be assumed to work through a USB-C charging port.
• Best for a quick battery top-up → Anker Soundcore. The listed 10-minute charge provides two hours of playtime.
• Best for carrying without a headphone cable → Anker Soundcore. The earbuds are wireless, and the case has an attached lanyard; the K3’s wired design keeps it tethered to the device.
• Best fit for fishing, between these two → Anker Soundcore, with a caveat. It is wireless and compact, but it is still an in-ear product, not an open-ear model intended to preserve awareness.
The search for the best open ear earbuds for fishing points to a different design category than either of these products. The same goes for someone searching for the best on ear headphones for fishing: the K3 is over-ear, but it is a wired kids’ headphone, not a fishing-specific set. And while the P20i’s touch controls may appeal to someone seeking the best touch control headphone for fishing, its listed noise control is None, and its design does not address every outdoor listening concern.
I would choose the Anker Soundcore P20i for fishing if I had to pick between these two. It is wireless, compact and offers substantially more stated playback time than a wired headphone can provide on its own.
That is a practical comparison, not a claim that the P20i is purpose-built for fishing. I’d still consider whether in-ear earbuds suit the surroundings. The EarFun K3 is the clearer choice for a child who needs wired, foldable over-ear headphones for a compatible device.
Between these two, the P20i is the more practical fishing option because it is wireless and has a compact charging case. The K3 is a wired kids’ headphone designed for compatible USB-C devices. Neither is described as open-ear or specifically made for fishing.
The listed noise control is None. The available specifications do not describe active noise cancellation or another noise-reduction mode, so I would not choose them on the assumption that they can block surrounding sound.
Not necessarily. The K3 is intended for compatible USB-C audio devices, but its product details say it is not compatible with a USB-C charging port. Check that the device supports audio through its USB-C connection before choosing it.
The K3 is explicitly identified as a kids’ and teens’ over-ear headphone, so its intended audience is clearer. The supplied specifications do not confirm a volume limit, so a parent looking for that feature should verify it before buying. The P20i is an adult-style wireless in-ear option with app-based EQ and touch controls.
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