Yes, suddenly in full jogging, nothing, MP3 was dead, nothing to do with the batteries. The period of one month is exceeded, Amazon is not the exchange, thank you Amazon for proceeds of over 38 Euros. I emailed the manufacturer in Germany whose warranty card was attached to the product, no answer. In short, I highly recommend. Let us add that the headphones are very bad, its not powerful enough, during the short time of use, I had to use other headphones. Go a positive point, ease of handling.
