When the headphones have an acceptable level of charge Eleanor, the blue light flashes every four seconds. When it begin to flash less frequently than that, about every ten seconds, it's time to plug in the USB cable in the way Matty talked about. You can then either charge your headphones from the computer or using a USB wall charger. I also have a blue tooth pair and for me these perform marginally better in terms of volume and clarity but I wouldn't use either for listening to music as there's something very strange about the stereo spread and separation. On 29 Mar 2014, at 12:07, Eleanor Burke wrote: OK interesting Ian, guess the blue light is just indicating a light! I wonder why it is flashing and not constant. Maybe this has something to do with the battery life. Can you tell me where the rubber part is to lift up to plug in the end of the charging cable? Presumably you increase the volume on your iMac and have to lower it again considerably when you unplug the headset. ----- Original Message ----- From: Ian Macrae<mailto:ian.macrae@xxxxxxxxxxxxxxxxxxxx> To: access-uk@xxxxxxxxxxxxx<mailto:access-uk@xxxxxxxxxxxxx> Sent: Saturday, March 29, 2014 11:44 AM Subject: [access-uk] Re: After Shocks Wired Headphnes with Microphone 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