Styled in a sleek black color, the Bose QuietComfort 35 Series II are wireless noise-canceling headphones. These headphones differ from the original QuietComfort 35 headphones with the addition of a button on the left earcup. Press and hold it to speak to Google Assistant or Amazon Alexa when connected to your smart assistant-enabled device. Or, use it to change the level of noise cancellation between Full, Low, or Off.