I can use it to control my local music, Spotify and without problems.
The sound is really good. Even at full volume
Here again are all enumerated good.
+ Large suction cup holds.
+ Long battery life
+ Annual volume
+ Fast Bluetooth connection
+ Large buttons
+ Really Waterproof
+ Despite showers, a telephone conversation is possible
Who wants to listen to music in the shower like and noisy, or for whatever reason call, for it is exactly right.