How to switch between Noise Cancelling and Ambient Sound.

While wearing the headphones:

1. Press the Noise Cancelling button once.
2. Each press switches between Noise Cancelling and Ambient Sound.
3. Listen for the voice guidance announcing the selected mode.
4. To turn Ambient Sound Control off, press and hold the Noise Cancelling button.

Note: The default setting is Noise Cancelling.