In the first months of use I judge normal (about 1 hour - 1:30 listening on the bus), I noticed that the black part that connected the son listeners stood out. Note that I have practiced any sport with these headphones, just Bus - RER - University. Then the headphones stopped working completely. I immediately contacted Amazon that returns me to the manufacturer's support. And then ... what frustration. I used the contact form on their website, I sent them several emails and a private message on Facebook (that was read by the way) ... no response within a week. Luckily I contacted Amazon and the latter replied in less than 2 hours and offered a refund.
As for the product itself, the metal box is too small and too thin cable for the headset to be worn comfortably around the ear.
