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Review title: Good noise cancelling but - electric shocks!!
Product review: OK these provided excellent noise cancelling and the batteries haven't died yet after more than 41 hours of travel.The headphones get quite uncomfortable after about four hours of use - they start to squeeze the edges of the ears and get quite hot too. I'd rather get a larger pair for flying, in retrospect.But the worst issue I've had, which I've never anticipated, is electric shocks in one ear every few hours! They come without warning and are completely sporadic. I've sent the headphones back to Sennheiser so I hope this gets sorted - they claim not to have heard of the issue before. But if the problem isn't fixed, it will completely put me off the brand. Not a problem you expect or want - it's a horrible sensation!
