Not bad... despite its tendency not to turn on.

At first I really didn’t like these headphones because the earpiece often will not turn on for one or two minutes before syncing with included Jack attachment or external device.

However, having used these with my ipod and UMPC for the past six months, as well as my Mac g5, I have to say they work pretty well. The little rubber earpieces are lost extremely easily, however, having retained a single rubber attachment, it still works on the train and walking through the city.