We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-26 · 5 min read · Independent comparison
If you want to swim with your music playing straight from the headphones — no phone, no pouch, no signal worries — choose Sudroid Bone Conduction Headphones; if you need the newer Bluetooth and a bigger on-board library for land workouts, choose FJX Bone Conduction Headphones.
• Sudroid's biggest strength: a genuine IP68/16GB dual-mode setup that lets you leave the phone behind and keep listening underwater, with a claimed 6–8h battery and a titanium wraparound band.
• Sudroid's biggest trade-off: older Bluetooth 5.0, a heavier 42g build, and only a 1-year warranty.
• FJX's biggest strength: Bluetooth 5.3, a lighter 29g titanium frame, 32GB of storage, and a 2-year warranty with a 720-day service promise.
• FJX's biggest trade-off: a short 4h average battery life and a 1.5h charge time, so long sessions need planning.
• Who Sudroid is for: swimmers who want the longest possible listening time and don't mind an older wireless standard.
• Who FJX is for: runners and gym users who want the freshest Bluetooth, the lightest fit, and the most storage for offline playlists.
Sudroid's pitch is simple: this is a swimming-first bone conduction headset. It's rated IP68, which is the top end of the water-resistance scale — dust-tight and built to survive full submersion, not just sweat and rain. The headset carries 16GB of internal memory and can switch between MP3 mode and Bluetooth, so you can load a few thousand tracks, leave the phone in your bag, and let the music come from the headband itself while you're in the water. That's the entire reason a swimmer would pick this over a standard pair.
The second thing that stands out is battery. Sudroid claims 6–8 hours of music and talk time from a 2-hour charge, which is a long window for a waterproof sports headset. For someone doing a long pool session plus a commute on either side, that's a real advantage. The titanium wraparound headband with an adjustable silicone band is designed to sit open-ear, so you keep hearing traffic, lane mates and lifeguard whistles. It's 42g, which is light enough to forget about on a run but not the featherweight end of the category.
Who should skip it? Anyone who wants the newest Bluetooth chip or cares about connecting to multiple devices with the least fuss — Bluetooth 5.0 is still perfectly usable, but it's a generation or two behind what FJX offers. The 1-year warranty is also shorter. And if you mostly train on land and want the lightest possible fit, the 42g weight is noticeable compared to the competition.
FJX leans into the same open-ear bone conduction concept but tunes it for people who want current tech and a bigger offline library. It's also IP68 rated, so it takes rain, sweat and swimming in stride — but the brand is upfront that Bluetooth and water don't mix, and it ships with two special earbuds plus an elastic band specifically so you can swim in MP3 mode with a better experience. That's an honest, useful detail: you switch to the local player before you get in the pool.
The headline numbers are 32GB of storage and Bluetooth 5.3. 32GB is a lot of music — you could carry a serious library without ever touching your phone. Bluetooth 5.3 is the newer standard, which generally means quicker pairing and a more stable link to phones, tablets, Macs and PCs, plus double-tap mode switching and triple-tap voice assistant access. At 29g with a titanium frame, it's the lighter of the two, and FJX rates it for all-day wear without ear swelling.
The trade-off is battery. FJX lists a 4-hour average life and a 1.5-hour charge time. That's a shorter window than Sudroid, so a long swim plus a long ride home could leave you reaching for the cable. On the plus side, FJX backs it with a 2-year manufacturer warranty and a 720-day after-sales service promise, which is meaningfully longer coverage than Sudroid offers.
• Best for swimming with no phone nearby → Sudroid Bone Conduction Headphones (IP68 plus 16GB MP3 mode, and a longer 6–8h battery to outlast a pool session).
• Best for the newest wireless connection → FJX Bone Conduction Headphones (Bluetooth 5.3 vs Bluetooth 5.0).
• Best for the biggest offline music library → FJX Bone Conduction Headphones (32GB vs 16GB).
• Best for long sessions away from a charger → Sudroid Bone Conduction Headphones (6–8h claimed vs a 4h average).
• Best for the lightest fit → FJX Bone Conduction Headphones (29g vs 42g).
• Best for faster top-ups → FJX Bone Conduction Headphones (1.5h charge vs 2h).
• Best for longer warranty peace of mind → FJX Bone Conduction Headphones (2-year manufacturer warranty vs 1 year).
• Best for a swim-ready accessory bundle → FJX Bone Conduction Headphones (ships with two special earbuds, an elastic band and a carry bag).
In my opinion, I'd buy the FJX Bone Conduction Headphones. The newer Bluetooth 5.3, the 32GB library, the lighter 29g titanium frame and the 2-year warranty make it the better everyday headset for most people who run, lift and swim occasionally. I'd only flip to Sudroid if battery life is your single biggest worry — its 6–8h window is the clear edge, and its 16GB MP3 mode still covers swimming fine. Check the current price on Amazon before you commit, since both sit close enough that value can swing.
are headphones waterproof
Not all of them. Waterproofing is a rating, not a category-wide feature. Both headsets here are rated IP68, which is the highest common level for dust and water ingress and is designed to handle full submersion — but most regular headphones are not, so always check the rating before you swim.
are headphones water resistant
Water resistant and waterproof are different claims. Water resistant usually means splashes, sweat and rain; waterproof with an IP68 rating means the device is built to survive being submerged. Sudroid and FJX both list IP68, so they go beyond basic water resistance.
No. Bluetooth signals don't travel well through water, and FJX explicitly warns against Bluetooth mode while swimming. Both headsets offer an MP3 mode with internal storage — 16GB on Sudroid, 32GB on FJX — so you load music on the headset and switch to the local player before you get in.
Sudroid, based on the specs: it lists 6–8 hours of music and talk time from a 2-hour charge. FJX lists a 4-hour average battery life with a 1.5-hour charge time. If you want the longer window, Sudroid is the pick; if you want the faster top-up, FJX wins.
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See also: THREE PEACHES Earbuds vs TECKNET Bone Conduction Headphones, Sanpyl Y113 vs LQZM Bone Conduction Headphones, Oumurs Y8X vs Silisoundtech Bone Conduction Headphones