We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-04 · 6 min read · Independent comparison
If you want a swimming-first headphone that survives real depth and stores a huge offline music library, choose Soveign Waterproof Headphones; if you need a lighter all-day sports headphone with a high dust-and-water rating and a longer support window, choose FJX Bone Conduction Headphones.
• Soveign Waterproof Headphones — biggest strength: a true IPX8 waterproof rating with a fully silicone-wrapped, bone-conduction open-ear build, plus 32GB of MP3 storage so you can swim without a phone.
• Soveign Waterproof Headphones — biggest trade-off: Bluetooth is limited underwater, so you have to switch to MP3 mode before you get in the pool, and the controls are touch-based, which can be fussy with wet hands.
• FJX Bone Conduction Headphones — biggest strength: an IP68 rating (waterproof and dust-proof) in an ultralight titanium frame, with a 20Hz–20,000Hz bone-conduction driver and a 720-day after-sales service window.
• FJX Bone Conduction Headphones — biggest trade-off: the battery averages around 4 hours per charge and it charges in about 1.5 hours, so long sessions need planning.
• Who each pick is for: choose Soveign if you swim, dive or snorkel and want music with no phone nearby; choose FJX if you want a featherweight open-ear headphone for running, gym work and mixed outdoor training.
The Soveign Waterproof Headphones (model X7) are built around one idea: going underwater with your music. The IPX8 rating is the headline — the brand describes them as able to go deep underwater and stay submerged for extended periods, with the whole frame covered in waterproof silicone. For anyone who has watched a "water resistant" pair die after a few laps, that distinction matters. These are positioned as swimming earphones first, not workout earphones that happen to tolerate sweat.
The second thing that stands out is the 32GB of built-in memory. Because it runs a dual-mode system, you can load thousands of songs (the brand cites more than 6000) and play them in MP3 mode with no phone and no Bluetooth connection at all. That is the mode you want in the water, since Bluetooth signals simply don't travel well through water — the product notes this directly. Think of it as a waterproof MP3 player that happens to sit on your cheekbones.
Where it fits best: lap swimmers, open-water swimmers, snorkelers and divers who want a self-contained music source. The 360-degree bendable frame is also a genuinely practical touch — you can flex it to sit comfortably on your head shape, and the design is meant to resist breaking at the middle joint. Physical buttons handle volume, playback and calls, so you can operate it one-handed.
FJX Bone Conduction Headphones: Who It's For
The FJX Bone Conduction Headphones (model AS9) take a different route. The rating here is IP68, which the brand describes as fully waterproof, dust-proof and moisture-resistant — so swimming, snorkelling, fishing and boating are all in scope, along with rain and heavy sweat. That dust-proofing is a real advantage over a pure water rating if you train outdoors on trails, in sand or in grit.
The build is the other selling point. It's made from ultralight titanium and weighs just 29g, with an ergonomic shape that tucks behind your ears. For long runs and long gym sessions, low weight is the difference between "I forgot I'm wearing these" and constantly adjusting them. The open-ear design also keeps your ear canal clear so you stay aware of traffic, cyclists and other people — a safety argument that matters more than most spec sheets admit.
Audio-wise, it uses a bone-conduction driver with a 20Hz–20,000Hz frequency range, and it runs Bluetooth 5.3 for a stable connection to iOS, Android, Mac, PC and laptops. It also carries 32GB of internal storage for MP3 mode, which is the mode the brand tells you to use underwater, since water interferes with Bluetooth. A double-tap switches between Bluetooth and MP3; a triple-tap triggers a voice assistant like Siri.
The trade-offs are worth naming. Battery life averages about 4 hours with a 1.5-hour charge time, so ultra-long sessions will need a top-up. The package includes two special earbuds, a charging cable, an elastic band, a bag and a manual — the earplugs are there because blocking the ear canal noticeably improves bone-conduction listening in water. And it's a 2-year manufacturer warranty with a 720-day service window, which is a longer support commitment than most sports headphones carry.
Who it's for: runners, gym-goers, cyclists, hikers and casual swimmers who want one ultralight headphone to cover everything. Who should skip it: anyone who wants maximum submersion time without recharging, or who wants a dedicated dive-first device.
• Best for swimming and diving → Soveign Waterproof Headphones. IPX8 with a full silicone-wrapped body is the more submerged-focused rating of the two.
• Best for dust and mixed outdoor conditions → FJX Bone Conduction Headphones. IP68 covers dust as well as water, which matters on trails and in sand.
• Best for long battery sessions → neither is a marathon champ, but check your session length. FJX lists roughly 4 hours per charge; Soveign doesn't publish a figure, so plan around your own swim or workout duration.
• Best for light weight and all-day comfort → FJX Bone Conduction Headphones. 29g in titanium is about as light as open-ear gets.
• Best for durability against bending and adjusting → Soveign Waterproof Headphones. The 360-degree bendable frame with a reinforced middle joint is designed for repeated flexing.
• Best for offline music without a phone → a tie. Both carry 32GB of MP3 storage; Soveign cites room for 6000+ songs.
• Best for control feel with wet hands → Soveign Waterproof Headphones. Physical volume and call buttons beat touch input when your fingers are wet.
• Best for long-term support and warranty → FJX Bone Conduction Headphones. A 2-year manufacturer warranty plus a 720-day service window is the stronger commitment on paper.
In my opinion, the right pick depends entirely on where you'll wear them most. If swimming is the main event — laps, open water, snorkelling — I'd buy the Soveign Waterproof Headphones. The IPX8 submersion rating, the fully sealed silicone body, the bendable frame and the physical buttons all point at one job done properly. If you want a single ultralight headphone for running, gym work and the occasional swim, I'd buy the FJX Bone Conduction Headphones instead: 29g of titanium, IP68, Bluetooth 5.3 and a 2-year warranty make it the better everyday sports companion. Check the current price on Amazon for both before deciding, since value shifts over time.
FAQ
are headphones waterproof
It depends entirely on the rating. The Soveign Waterproof Headphones carry an IPX8 rating and the FJX Bone Conduction Headphones carry IP68, so both are designed for swimming. Many ordinary headphones are only sweat-resistant — these two are not in that category.
are headphones water resistant
No — and both brands say so. Water interferes with Bluetooth signal transmission, so you must switch to MP3 mode before swimming. Both models have 32GB of internal storage, so you load music onto the headphones first and play it locally.
The FJX Bone Conduction Headphones, on paper. Its IP68 rating covers dust-proofing as well as water, while Soveign's IPX8 rating addresses water immersion specifically. If you run on trails or in sandy environments, that extra protection is worth noting.
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