After several weeks of racing with these headphones, I am very satisfied. Once you understand how to thread headphones, they hold firmly in place and do not bother, we can concentrate on the race. The Bluetooth connection is good, in this case with an iPhone attached to the arm by a cuff so very close. No interruption in music in particular, what is the point. The sound meanwhile is correct (I would not say excellent, but satisfactory for the price range). Overall I recommend, therefore, for a particular runner.
