These were comfortable out of the box but required socks to prevent blisters at the heel. Sometimes unplugging from the charger will help Sometimes, nothing will clear it up. I didnt purchase this book for an easy read, although I have learned so much from her, this book has more information that my mind can fully absorb, I was able to read and grasp at MUCH of the content. This negative review however, is because of some false advertising that seemed to come from amazon itself. The cable to plug it in is pretty ugly to look at but not s big deal if you?re planning on hiding cables. Just wish it was a tad bigger so the wall adapter would fit too. jai lu attentivement l "User manual" dispo en toute langue, qui préconise de charger complétement avant utilisation. - Sound quality is extremely poor. I have soooo many problems with my feet and ankles including having had surgeries, injuries etc. Ordered this headset after watching some review videos because JBL headsets are so new.