When swimming too quiet

The device itself is okay and the processing, handling and also the maintenance. But it's just way too quiet for swimming.
The earplugs fit well and stay esp. Not the same for moisture in the ear canal stuck as bad as my time at Speedo Aquabeat has happened.
Why the device is only as silent, whether EU Directive or not, I do not care, so it is good not for my purposes.
The closed water earplugs dampen down the already moderate volume beyond recognition, so even optimally controlled MP3 temporarily just can not be guessed. The open, normal earbuds are good not just for water.
Have even a few MP3s Extra overridden, which is very expensive, but even that was not satisfactory.
By the way, one could the charging station when you already inextricably welded to a cable and unnecessary error prone makes at least a longer USB cable spendieren.

Prefer not counting tiles, so I probably would rather change back to Finis back and hope there to get delivered a fully functional device, what the warranty period does not survive just barely. The right side was broken during my last Finis player after just 25 months. Seems to me the lesser evil among the swimming MP3 players ...

Conclusion: Good approach of Sony, but not enough for me to swim the volume.