the reason was that I didnt hammer the nails all the way in. I didn’t realize the charging port was expose. He wore them constantly on holiday and round the house. I work for a radio station, and have been working from a home studio for 4 weeks now, 9+ hours a day with headphones one. Bingo! I bought this expecting it to be a nice upgrade from my XB950N1. And we were off to the races. So disappointed in the quality of these shoes! I actually bought it as a gift for someone and only get measurements and needs I picked this shoe perfectly. I would set up the wires first before mounting the monitor.