Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No noise canceling

The headphones work, as headphones, but there is no noise canceling going on. There is a switch for on/off but there is no difference in the sound background sound in either setting. When the noise canceling is turned on (requires a battery) and the red LED comes on there is white noise added to the music. This is annoying and detracts from the quality of the music. I've tried it in several different quiet to noisier environments of different noise types.I wouldn't waste the money on these again.