Really not bad but fragile

I tried several machine before this one with headphones in their ears. None of them worked correctly: after a few laps the water was part of the ears and the sound became very weak.
This one really works very well. For me it is the best system unchallenged. Warning: we are under water and it is therefore impossible to really enjoy music. But it is very decent and much better than what I had tried before. For music is ok but you can not really listen to podcast broadcasts. Personally I can not do without me.
The only problem is reliability: I finished 3rd and on average they lasted one year. Good less than a year they are guaranteed, more than a year must board at checkout. I believe that no manufacturer has found the recipe to exit a device that is resistant to water and chlorine. So you almost take this as such: to be ready to replace it every year.