Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Comfortable, but useless.

These headphones are very comfortable. Unfortunately I have a very difficult time with the headphones as they typically drop the audio signal at least 3 or 4 times a day, cutting to static - which can be painful. To get the signal back I must unplug the base station and plug it back in.Most often I must turn my head to a specific angle to get the signal clearly, as otherwise there is a constant static in the background of the music.The sound with a clear signal is decent, and gives OK sound in the lower range, but the highs are not as crisp as I would prefer.