A:AnswerI think your asking can the the ACTIVE NOISE CANCELLING be used by itself without music. The answer is yes !!!! They don't even need to be connected to the phone to work.
A:AnswerI had the same problem, it’s the charger. I change it (my cellphone charger) and works fine. 2-3 hours to full charge. The red light turn blue.
A:AnswerI recently purchased a set of the Jam Contours. Love them. I haven't had any trouble with charging them though. Are you using the charging cord and plug that came with them? I have used other device cord and plugs and they worked fine as well.