The SONR Multisport is the newest addition to SONR's bone conduction lineup, and the positioning is different from the original SONR Music: this one isn't just a swimming player with a Bluetooth bonus — it's built to move between the pool, the road, and the bike with a single dual-mode setup.
We tested it over several weeks across lap swimming, easy runs, and indoor cycling to see whether "multisport" is a real design choice or just a label.
What We Liked
- 32 GB storage — double the original SONR Music
- Genuinely useful outside the pool: runs, gym, cycling
- 8-hour battery covers long training days
- Secure wrap-around fit didn't shift on runs
- Dual Bluetooth + wired MP3 mode in one device
- IPX8 waterproof, sweatproof for hard efforts
- USB drag-and-drop for underwater tracks
What Could Be Better
- Priced above the entry-level SONR Music
- Wrap-around frame is less minimal than the disc design
- Bluetooth still cuts out underwater (physics, not a flaw)
- Overkill if you only ever swim
Design & Build
Where the original SONR Music uses a flat disc you tuck under a cap, the Multisport goes with a lightweight wrap-around frame — closer in shape to a running headphone than a swim disc. That's a deliberate trade-off: it's a little more visible poolside, but it stays put far better during runs and rides, where a loose disc would bounce.
Build quality feels consistent with the rest of the SONR lineup — sealed housing, no exposed ports beyond the charging contacts, and a matte finish that resists scratching from goggle straps and helmet buckles.
We ran the same 5K route wearing the Multisport three times in a row with no repositioning. It held its place through the whole run, including a fast finish — something a swim-first disc design isn't built for.
Fit Across Three Sports
This is the entire premise of the product, so it's the section that matters most. In the pool, the wrap-around frame sits comfortably under most swim caps, though swimmers with very tight caps may notice it more than the slimmer SONR Music disc. On land, the same frame behaves like a standard open-ear sport headphone — stable during runs, and no pressure points during an hour on the turbo trainer with a helmet on top.
If your training is swim-only, the original SONR Music disc is still the more minimal choice. If you regularly move between the three disciplines, the Multisport's fit stops being a compromise and starts being the actual point.
Sound Quality
Underwater, the Multisport delivers clear, consistent audio through lap swimming — slightly behind the dedicated SONR Music in raw underwater loudness, which tracks with a design that's optimized for more than one environment. On land via Bluetooth, it's a clear step up: fuller mids, better connection stability, and no dropouts during runs or rides.
Underwater performance
At 1m depth during freestyle laps, audio stayed clear and easy to follow. At greater depth, volume tapers off similarly to other bone conduction swim devices — this is a shared limitation of the technology, not specific to SONR.
On land via Bluetooth
This is where the Multisport separates itself from swim-only devices. Bluetooth connection was stable through an entire run and a 45-minute indoor ride, with no dropouts and no need to keep a phone within a few feet. For anyone doing brick sessions (bike-to-run), not having to swap headphones between disciplines is a genuine convenience.
Storage & File Management
32 GB of onboard storage is double the original SONR Music's 16 GB — enough for a long-term training music library or a stack of podcasts and audiobooks without needing to rotate files. Loading files works the same way as the rest of the lineup: connect via USB, drag and drop, no proprietary software.
Battery Life
Rated at up to 8 hours, the Multisport's battery is the standout spec on paper — double the 4-hour rating of the original SONR Music. In practice, that translates to several training days between charges for most athletes, and it's the reason the Multisport is a realistic option for longer sessions and multi-sport training blocks where you don't want to think about charging mid-week.
Across a mixed week — three swims, two runs, one ride — we only needed to charge the Multisport once. For swimmers coming from the original SONR Music's 4-hour battery, this is the single biggest quality-of-life upgrade.
SONR Multisport vs SONR Music
| Spec | SONR Multisport | SONR Music |
|---|---|---|
| Best for | Swim + run + bike | Swimming only |
| Storage | 32 GB | 16 GB |
| Battery | 8 hrs | 4 hrs |
| Dual Bluetooth + MP3 mode | ✓ | ✓ |
| Fit under swim cap | ~ Good | Excellent |
| On-land stability (run/bike) | Excellent | ~ Not designed for it |
| Waterproof | IPX8 | IPX8 |
Who Should Buy the SONR Multisport?
- Triathletes training across all three disciplines
- Runners and cyclists who also swim regularly
- Anyone doing brick workouts
- Athletes who want one device instead of three
- Longer training days needing 8-hour battery
- You only ever swim (→ SONR Music, more minimal fit)
- Budget is the top priority
- You want the slimmest possible under-cap profile
Final Verdict
The SONR Multisport succeeds at the thing it's actually trying to do: it's a genuinely usable device across swimming, running, and cycling, not a swim player with Bluetooth bolted on. The doubled storage and battery over the original SONR Music make it the easy pick for anyone training across multiple sports rather than swimming exclusively.
If your training is swim-only, the original SONR Music's slimmer disc is still the better fit. But for triathletes and multisport athletes, the Multisport is the more logical buy.
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