After ordering and returned Jabra Rox (for which I made a review), I wanted to try the Beats Powerbeats 2. What is good with Amazon is that with the flexible return policy, it is free to try a product and return it if it does not fit and it really easily. But here I am delighted by this and I keep it! In a few words: - The product does not move. I use the bicycle and I have also had the opportunity to do cardio with carpet, take the headphones without moving. - The sound is good enough to take pleasure in listening to music. I am very demanding on that side. We are far from Hi-Fi headphones for headphones but obviously, we are in a good average. However, be careful to choose the tips that work well, otherwise the sound will be much altered, especially the bass. - They are very comfortable to wear and lightweight. - The sound of the microphone during a call is equivalent to wired headphones Apple, which is perfect (on Jabra Rox and many other Bluetooth headset or headphones, the sound of the microphone is catastrophic at times making it impossible conversations). - I have not had any outages related to Bluetooth when listening far