Look, I got this on sale because I wanted to try a showerhead speaker, and the design was nice enough that I thought my wife wouldn't complain.  I am blown away by how good this thing sounds.  It has Bluetooth 5.0, and connecting to my phone was easy, I didn't need the Kohler app to set it up.  I read other reviews saying people only got one channel of audio, but I have not had any issues whatsoever.  It gets loud, and has amazing range and bass for such a tiny speaker.  Battery lasts for weeks with just shower usage, but I carry it around the house now and use it!