How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a safe, kid-friendly wireless headphone that can also run wired over a 3.5 mm jack, choose PowerLocus Headphones; if you need to get a Lightning iPhone or iPad back onto a standard aux jack, choose Seulliya MFi Certified iPhone.
• PowerLocus Headphones — biggest strength: four ways to listen (Bluetooth 5.3, aux, FM radio, Micro SD) plus an 85 dB hard volume cap and a foldable over-ear build with a carry case.
• PowerLocus Headphones — biggest trade-off: it's a kids' headphone at heart — 15 hours of wireless playtime is modest, the look and the 85 dB ceiling aren't aimed at adult listeners, and TV/console Bluetooth use may need a separate adapter.
• Seulliya MFi Certified iPhone — biggest strength: it turns a Lightning port into a real 3.5 mm aux output, so an iPhone 14/13/12/11/X/8/7 can feed a car stereo, speaker or wired headphone again.
• Seulliya MFi Certified iPhone — biggest trade-off: it does one job. It makes no sound on its own, it's a 3.3 ft cable, and it won't work with USB-C iPads or AirPods Max.
• Who each is for: PowerLocus for a child who needs safe wireless listening that can also go wired; Seulliya for anyone with a Lightning iPhone who still wants to plug into an aux port.
PowerLocus built this headphone around one idea: give a kid wireless freedom without giving them a volume knob they can abuse. The 85 dB maximum is a fixed ceiling, not a suggestion, and it's paired with 40 mm dynamic drivers and 32 ohm impedance so the sound still has body — clear stereo with some bass rather than a thin, tinny whisper. The over-ear cups use protein foam and faux leather and fully cover the ears, which helps with sound isolation on a bus or in a busy kitchen.
The feature list is unusually wide for a kids' headphone. Bluetooth 5.3 handles the everyday phone-and-tablet pairing with roughly 33 ft of range, and when the battery runs down you still have options. Wired aux mode over the 3.5 mm jack is effectively limitless — no charging, no pairing, no dropouts. There's also FM radio and Micro SD playback, which is genuinely useful for a child who doesn't have a phone yet. It folds down, weighs 165 g, and ships with a hard-shell case, a charging cable and the audio cable.
Buy it if you're shopping for a child who needs a safe volume limit, long-wear comfort and a wired fallback for flights, car rides or a dead battery. The 15-hour wireless figure covers a school day or a long trip, and the 2-hour charge tops it back up quickly. Skip it if you're an adult who wants a neutral, full-volume listening headphone — the 85 dB cap and the kid-oriented styling aren't built for that. Also note that connecting wirelessly to a TV, PS4, PS5, Switch or Xbox may require an extra Bluetooth adapter or transmitter, so check your setup before assuming it pairs straight out of the box. In my opinion, the aux mode is the quiet hero here: it's the part that keeps working when everything else needs charging.
This is a problem-solver, not a product you buy for fun. Apple dropped the headphone jack, and a huge number of car stereos, home receivers, portable speakers and wired headphones still expect a 3.5 mm plug. The Seulliya cable bridges that gap: Lightning on one end, a 1/8 inch male aux plug on the other, 3.3 ft of soft TPE in between. Plug it in and audio routes out; there's no driver, no external power, no pairing, no setup screen.
The details that matter are the ones that decide whether a cable survives daily life. It's Apple MFi certified, built around a certified smart chip with a Realtek DAC, and rated to a 15,000+ bend lifespan — meaningfully more abuse than a generic cable usually tolerates. The 24K gold-plated contacts and up-to-24bit/96kHz support are about keeping the signal clean rather than adding coloration. It's also slim enough to stay plugged in with a phone case on, which is the failure point on a lot of cheap dongles.
Buy it if you drive an older car with an aux input, own a wired headphone or speaker you refuse to retire, or want to keep a Lightning iPhone or iPad connected to a home stereo or Hi-Fi without Bluetooth lag. Skip it if your device is a USB-C iPad or iPad Pro, or if you're trying to use AirPods Max — the sheet notes this cable doesn't support that bidirectional case. It also won't help a USB-C iPhone. And remember what it is: a converter. It doesn't improve a bad source or add amplification.
Side-by-Side: Which Should You Choose?
• Best for safe listening with kids → PowerLocus Headphones. The 85 dB cap is the whole point.
• Best for reviving an aux port → Seulliya MFi Certified iPhone. It's the only one of the two that creates a 3.5 mm output from a Lightning phone.
• Best for travel → PowerLocus Headphones. It folds, weighs 165 g and includes a hard-shell carry case; the Seulliya cable is lighter still but only as a pocket accessory.
• Best for multiple listening sources → PowerLocus Headphones. Bluetooth, aux, FM and Micro SD in one device.
• Best for a car stereo → Seulliya MFi Certified iPhone. That's its core use case.
• Best for a phone case left on → Seulliya MFi Certified iPhone. The connector is designed to fit without removing the case.
• Best for durability under daily flexing → Seulliya MFi Certified iPhone, with a 15,000+ bend lifespan on a single-purpose cable.
They don't really compete — they solve different problems, and that's the honest answer. If I had to pick one for the most common situation, I'd buy the Seulliya MFi Certified iPhone cable, because it's cheap insurance against a dead aux port and it works with gear people already own. But if there's a child in the house, I'd buy the PowerLocus Headphones instead — the 85 dB limit, the folding over-ear design and the wired aux fallback make it the more useful object day to day. Check the current price on Amazon for whichever one matches your situation.
how to use wired headphones without headphone jack
You need an adapter that converts your phone's port to a 3.5 mm output. On a Lightning iPhone, that's exactly what the Seulliya MFi Certified iPhone cable does — plug it into the phone, plug your headphones into the other end, and audio routes through with no driver or pairing step.
how do i connect my wired headphones to my phone
If your phone has no headphone jack, use a certified adapter cable between the phone's charging port and the headphone's 3.5 mm plug. The Seulliya cable is MFi certified and works with iPhone 7 through iPhone 14 and most Lightning iPads — but not USB-C iPads or AirPods Max.
how to make aux cable with headphones
You can't turn headphones into a cable, but you can turn your phone into an aux source. A Lightning-to-3.5 mm cable like the Seulliya one lets you feed a car stereo, speaker or Hi-Fi from your iPhone — the same signal path a dedicated aux cable would carry, just sourced from the phone.
do PowerLocus headphones work with an aux cable
Yes. PowerLocus Headphones include a 3.5 mm jack and ship with an audio cable, so you can switch to wired mode with no battery limit at all. That's separate from Bluetooth 5.3, FM radio and Micro SD playback, and it's the mode to use on a plane or when the battery is empty.
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: H HIFIHEAR CCA C10 vs Jooy Paii Odio Ear Monitor Headphones, 1MORE Fit SE S30 vs ONES MusPlayE AI, Panasonic RP-HJE125E-W vs Septpenta Head Mounted Headphone, ONITOON Cat Ear vs Wentronic Kids Headphones