I purchased this product to have a bluetooth headset pocket and that I can carry around to the right and left, which can:
* Weather resistant
* Withstand difficult conditions (dust when one tinkers, sand beach, ...)
And possibly listen to music in the shower
For these conditions, it is no problem, everything is well protected and I am reassured about the seal, the product is well made.
In terms of musical quality, so do not expect a high-fidelity stereo, but we suspected, that being, comparing with other competitors, we realize that this model draws well out of the game! This is the reason the 5 star given the price and the compactness of the product, the challenge has been well noted.
When you tinker, when you are outside, you do not necessarily need a high-fidelity quality either, it's just history to have a little music to accompany us.
Bluetooth "A2DP" can raise the noise level, but I think the tightness of the product makes the sound a bit muffled.
Frankly, I had a model of another brand (design and finishing to worst), which had a substantially identical sound quality. So I prefer this model, which has the merit of design and great feel and durability. There are some years I also had a similar model, which was much less efficient (with time, technology is evolving - A2DP requires).
You have a video attachment, precisely to judge the sound quality for yourself and make your own mind.
Finally, after several weeks of intensive use, no significant problem, and besides my daughters use it a lot in the shower, so far I have not had to mourn any problems with water (they change them songs by having all wet fingers, no worries!)