The sound quality is not outstanding, but for this purpose in order. She hears while showering. The volume of the little ones are the forth definitely.
Can also be used as a speakerphone warden; we have the random times tried, because I called her when she was about to take a shower and the speaker was on. The water is not running, the noise would have done otherwise certainly difficult, but despite Hall in the bathroom that worked quite well.
In a built-in radio, I am not so far encountered and also do not know how to operate it. On the device itself in any case there is no corresponding keys. Presumably, it is meant that one so loud can also listen to the radio from your phone and the description would be incorrect on this point.
The SGS5 has made me completely incomprehensible reasons no longer a radio with built-in radio, the device would also have been available separately (at least as long as there are FM here).
Conclusion: For the money a quite nice device that not only the feature "water you" brings, but also much better to hang out with the hook on something than other products with cord. The sound is ok and if during the shower comes a call, you can also make calls quickly still. :-))
I do not regret the purchase.