"No noise cancellation"0.5 starson by johnno12345
Pros: Good sound quality if used as standard headphones
Cons: No noise cancellation at all. Turning on increases sound volume but exterior noise remains same level. Turning down volume to match level when powered off and the noise level is exactly the same.
Summary: Completely disappointed. Don't buy if you are after noise cancellation feature as I was. So disappointed I registered on this site just to express my view. Will be complaining to Philips to get a full refund as product does not live up to there claim of 70% noise reduction. In my opinion, the only noise reduction is through amplification of the sound to reduce the noise to sound ratio.