Verified Purchase(What is this?)
This review is from: Blackbox C20 Noise Cancelling Headphones - Black (Electronics)
These are compact and light weight but highly effective. They really do work very well. Sure they are not quite as good as my over the ear M16s but at £40 they were a quart of the price! These are much better than the C18s i used to own - better sound, work with my HTC One X and they work when the battery runs out!