Shokz OpenSwim Pro: Underwater Audio Problem and Solution
Generated by ReeFix AI · Sources: technical and specialist documentation (see Sources section)
Revision of 12/07/2026
⚠️ SAFETY WARNING / RISK OF FIRE AND LOSS OF WATERPROOFING. This device contains lithium batteries. Improper puncturing or bending during disassembly can cause explosions or flames. Furthermore, any unauthorized or incorrect intervention can compromise the integrity of the IP68 seal, leading to permanent loss of waterproofing and fatal damage to the electronics in case of water infiltration. The intervention requires precision and the assistance of a specialized technician is recommended. ReeFix provides this diagnosis EXCLUSIVELY for educational and informational purposes.
Shokz OpenSwim Pro Technical Diagnosis: Absent Underwater Audio
The lack of underwater audio playback with Shokz OpenSwim Pro is predominantly (55%) a problem of incorrect usage mode: Bluetooth does not propagate in water. It is essential to activate MP3 mode (press and hold Volume+ and Volume- simultaneously for 2 seconds) with preloaded files. It often happens that the user forgets this transition, interpreting the silence as a malfunction.
If MP3 mode is active and audio is missing, the most probable cause (25%) is a short circuit/leakage on the magnetic charging pins. Chlorine or salt residues can create a conductive bridge, causing shutdowns or muting during immersion.
This accumulation of dirt and oxidation is also the main reason why Shokz headphones suddenly stop charging or are not recognized by the computer for MP3 file transfer. Quick check: thoroughly clean the pins with WD-40 Specialist Electrical Contact Cleaner on eBay.
Less frequent (15%) are liquid infiltrations into the transducers due to IP68 failure, or (5%) firmware/file system corruption. These faults cause weak or absent audio even in MP3 mode and after drying. A Shokz OpenSwim Pro Magnetic Charging Cable on eBay can be useful to attempt a firmware reset.
Operational decision: If MP3 switching resolves the issue, continue using it. If it persists, clean the contacts; if still not, consult a technician for hardware/firmware diagnosis, or consider replacement.
Why can't I hear my Shokz OpenSwim Pro underwater?
It often depends on active Bluetooth instead of MP3. If MP3 is active, there might be a short on the charging pins or an infiltration.
How to tell if the underwater audio problem is a fault or my mistake?
Activate MP3 by pressing and holding Volume+ and Volume- for 2 seconds with preloaded files. If audio is still missing, it might be a fault.
When should I contact a technician for the underwater audio of Shokz OpenSwim Pro?
If MP3 doesn't work and clean pins don't solve it, contact a technician to check for infiltrations or firmware issues, avoiding DIY disassembly.