Well, the power needs of your headphones match those of the iPhone charger, so I seen no problem in using the cable provided w/ that charger (or any other w/ the same ratings); now, if you have more powerful chargers, such as those for an iPad (i.e. 5V x 2.0 or 2.4A), then you might want to check w/ the manufacturer's website to see if the headphones can be safely charged w/ the more powerful amperage device(s) - most of these modern electronics have built-in safety features that permit faster charging, but always good to check first. Good luck - Dave