Conclusion: Above average noise reduction, especially for low frequency sounds. Construction is flimsy though. Sound quality is really good. I read some people hear a hiss with these headphones but I have never heard it.
Conclusion: The noise cancellation is great. Comfortable earbuds. Have used it in planes and on treadmills. Cons: the cable from the earbuds to the unit is too short to clip the unit onto your belt. Will not 'pass through' audio when turned off. The slide volume control keeps it from accidentally getting changed, but then is difficult to 'fine' tune.
Summary: Comments about Panasonic RP-HC55 Noise Canceling Earphone: A good earphones. Very good noise cancellation capability as advertised. The only problem is that it creates unpleasant static noise when using it for running on a treadmill.
Summary: Pros: I like the in-ear design - much more comfortable than over-the ear types. Good noise cancelling, almost as good as a pair of over-the-ear Sennheiser NC headphones I also own. Great battery life - over 15 hours (round trip, trans-Pacific) and still going. Con: Cord between the earplugs and the battery case is too short. Conclusion: Another reason why Bose NC headphones are total ripoffs.
Pros: Comfortable, Compact, Good Value, Great Sound, Lightweight
Summary: Great noise cancellation and when you consider the alternatives are $300 Bose headphones, at a great price. I purchased this based on the Consumer Reports recommendation and am very pleased with the quality. The three sizes of ear pieces included are a nice touch.