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Cables are symmetrical and they're that anti tangle insulation that all new headphones seem to have too.
Mine don't have the microphone or buttons but I believe there is an E10 model with that available. A quick search of Amazon shows that they're a bit pricier than the standard E10, but the 2012 E10M is still available for a bargainous £20.
Make sure you buy the Comply Foam tips though, they really make the difference.
Oh wow, that's a p glowing review.
Quick Qs - are the cables symmetrical? does it have a microphone/controller thingy?