There are a total of five buttons on the remote located on the right cable. Three buttons are grouped together on the right face of the remote. The larger middle button is the multi-function button. It initiates play/pause and other track controls for videos and music, answers and ends calls, and also can initiate voice commands such as Siri or voice dial. The buttons on either side of the multi-function button are volume +/- buttons. They allow the listener to easily adjust volume in an intuitive up/down vertical orientation.
Additionally, two buttons are located on the back of the remote. These buttons control the level of noise cancelling. To increase the amount of noise cancelling, press ▲ (the top button). To reduce the level of noise cancelling and hear more of your surroundings, press ▼ (the bottom button).