TL;DR: I bought and returned a pair of Parrot Zik headphones.  I liked the way they sounded. I didn't like that it's hard to charge them and that I always had to use the smartphone app to control them.   Likes   They sound better than the Nokia BT-905 headphones I've been using for years.  The noise canceling is as good as or better than my Nokias.   There is an Android application that you use to set up the headphones.  You can control things like the noise canceling (on/off), the size of the sound field (e.g. small room, jazz club, concert...