If they are wired there not bluetooth. In my experience they are simply not very loud. Having said that I use mine at work with my iMac because they enable me to hear what's going on around me while I'm also working. On 28 Mar 2014, at 22:17, Eleanor Burke wrote: Hi All, I am stupid about these headphones. I tried turning up volume on them but this did not work and I had to turn up the volume on my iPhone so that when I unplugged the volume on the iPhone was very loud.I also tried them out on my Mac and they were very quiet, could only just hear. Now maybe my problem was that I had not paired them. Did not realise the wired ones are bluetooth but I presume they are as I see a flashing blue light. Finally I could not find where to plug in the charger on them. Any advise welcome. Eleanor