Coby CV198 HighPerformance NoiseCancelling Stereo Headphones Coby's noisecanceling headphones deliver dynamic audio and filter out background noise, letting you focus on the music. Active noisecancellation system provides a distractionfree listening experience, while powerful drivers deliver deep bass sound. An adjustable headband with fullsize earcups and nontangling cord let you experience your music in complete comfort. Dualprong adapter for airplane use included.