How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a wired, zero-latency way to keep using your favorite 3.5 mm headphones with a modern iPhone, choose Seulliya Apple MFi Certified; if you need true wireless freedom with active noise cancelling and clear-call microphones, choose BLXSounds Earbuds.
• Seulliya Apple MFi Certified — biggest strength: an MFi-certified Lightning-to-3.5 mm dongle that plugs straight into your existing wired headphones, with 48 kHz / 26-bit audio output and no error pop-ups on iOS.
• Seulliya Apple MFi Certified — biggest trade-off: it's a music-only adapter with no call support, and it's Lightning, so it won't fit USB-C iPhones.
• BLXSounds Earbuds — biggest strength: Bluetooth 5.4 true-wireless earbuds with adaptive ANC, an ENC call microphone, and 13 mm dynamic drivers tuned across 20 Hz–20,000 Hz.
• BLXSounds Earbuds — biggest trade-off: they're battery-dependent (about 4.5 hours per charge), so you're always managing a case and a cable.
• Pick Seulliya if you already own wired headphones or use an aux cable in the car and want a dependable two-pack.
• Pick BLXSounds if you want wireless listening with noise cancelling and hands-free calls across iPhone, Galaxy, Pixel, PC and laptop.
The Seulliya adapter is a small, white, two-pack dongle that converts a Lightning port into a standard 3.5 mm headphone jack. What makes it interesting isn't the shape — it's the MFi-certified chip inside. Apple's certification is the reason this thing avoids the "accessory not supported" message that plagues cheap dongles, and the listing specifically calls out full compatibility across iPhone 14, 13, 12, 11, X, XS, XR, 8, 7 and 6 families, plus iPod and iPad. If your phone still has a Lightning port, this plugs in and just works.
The audio side is where it earns its spot in a bag. Seulliya states 48 kHz and 26-bit audio output with noise-reduction processing, which is plenty for streaming music, podcasts and movies on wired headphones or car and home stereos. That's the whole point: you keep the headphones you already like, and you keep the physical connection — no pairing, no charging, no latency between a video and the sound. A two-pack is genuinely practical here, because the most common failure of any dongle is leaving it somewhere. One lives in the car, one lives in the backpack.
Now the honest limits. The adapter does not support calls — it's music only. So if you need to take meetings or answer calls on wired earbuds, this isn't the tool. It's also built for Lightning, so anyone on a USB-C iPhone or Android is out of luck. And importantly: this is a connector, not a listening device. If you don't already own 3.5 mm headphones or an aux cable, buying this alone gets you nowhere. Buy it if you're a Lightning iPhone owner with good wired headphones or a car with an aux input. Skip it if you want wireless, calls, or noise cancelling.
The BLXSounds A9PRO-GARY is a set of in-ear true-wireless earbuds built around Bluetooth 5.4 with a 15-meter range. Two features do the heavy lifting. First, adaptive ANC: the earbuds adjust noise-reduction depth based on what's around you, which is aimed squarely at commutes — subways and planes are named specifically — and it can be toggled on or off manually. Second, ENC on the microphone side, which cuts down background noise and lifts your voice during calls so the person on the other end hears you more clearly. In my opinion, that combination is the real reason to consider these over a basic pair of buds.
The sound hardware is a 13 mm dynamic driver with a bio-composite diaphragm and a 20 Hz–20,000 Hz frequency range — the full audible band, with the listing emphasizing clear low, mid and high frequencies. That tuning suits general listening, conference calls, online courses and video chat, which is exactly the audience BLXSounds appears to be targeting. Touch controls on both buds handle volume, call answer/hang-up and track navigation, so you're not pulling out a phone mid-commute.
Battery is the number to think about. The earbuds themselves are rated at about 4.5 hours of average life per charge, with a 40-hour charge time figure for the case and a case standby life of around 180 days. Translation: solid for a workday commute plus a workout, but heavy all-day users will be docking them in the case regularly. Compatibility is broad — iPhone 16 down through older models, iPad, MacBook, Galaxy S25/S24/S23/S22/S21/S20, Z Fold and Z Flip, Pixel 9 down to 3XL, and anything else with Bluetooth. The package includes the earbuds, a Type-C charging cable, replacement earplugs and a manual, with a 1-year warranty. Buy these if you want wireless freedom, noise cancelling and call clarity. Skip them if you want zero charging and zero pairing.
• Best for keeping your existing wired headphones → Seulliya Apple MFi Certified. It's a direct Lightning-to-3.5 mm bridge, no charging required.
• Best for wireless freedom → BLXSounds Earbuds. Bluetooth 5.4 with a 15-meter range means you can leave the phone on a desk or in a bag.
• Best for commute noise → BLXSounds Earbuds. Adaptive ANC is designed to read the environment and adjust, with a manual on/off option.
• Best for calls and meetings → BLXSounds Earbuds. ENC microphone processing is built for exactly this; the Seulliya adapter explicitly does not support calls.
• Best for car aux and older stereos → Seulliya Apple MFi Certified. A 3.5 mm headphone jack on a Lightning phone is the whole use case.
• Best for audio specification clarity → Seulliya Apple MFi Certified. 48 kHz / 26-bit output is stated up front; the earbuds cover the 20 Hz–20,000 Hz band.
• Best for durability against daily abuse → Seulliya Apple MFi Certified. Reinforced TPE casing rated to withstand 28,000+ bends, and you get a spare in the box.
• Best for a single all-rounder → BLXSounds Earbuds. One pair covers music, calls, travel and workouts without any cable.
If I had to choose one, I'd buy the BLXSounds Earbuds. They replace more of what you'd otherwise carry — no dongle, no wired chain, and you get ANC and a call microphone that the Seulliya adapter deliberately leaves out. The trade-off is real: roughly 4.5 hours per charge means you'll live near the case. But the Seulliya is a problem-solver for one specific situation — a Lightning iPhone plus wired headphones or an aux jack — and if that's your situation, the two-pack and the bend-tested build make it the smarter buy. Different jobs, and honestly both do theirs well. Check the current price on Amazon before you commit.
Yes, if you have a Lightning port and want to keep using 3.5 mm headphones or a car aux cable. The MFi chip is what keeps iOS from throwing an error message, and the package includes a spare.
No. Seulliya states it supports music only and does not support call function. For hands-free calling, the BLXSounds earbuds with ENC microphones are the right pick.
The earbuds are rated at about 4.5 hours of average battery life, with the charging case listed at 40 hours of charge time and roughly 180 days of case standby. Expect to dock them more than once on long days.
The BLXSounds earbuds, by a wide margin — they cover iPhone, iPad, MacBook, Galaxy, Z Fold/Flip, Pixel and any Bluetooth device. The Seulliya adapter is Lightning-only, so USB-C iPhones and Android phones are not supported.
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: JSAUX USB C vs Seulliya Apple MFi Certified: Fast Charge, ZOHAN 032 vs Ucaca Apple MFi Certified, BLXSounds Earbuds vs Nvnceiw 2