Vista 2 earbuds are designed to offer distinct audio listening experiences with two different modes - SurroundSense & ANC.

In SurroundSense you can listen to your music and at the same time clearly perceive sounds of your environment without having to remove your Vista’s 2 earbuds or interrupt your activity.

In ANC (Active Noise Cancelation) you can submerge to the music or deeply concentrate in an activity with greater isolation from ambient sounds.

To enable SurroundSense or ANC mode follow the steps below:

1. Place both earbuds in your ears.
2. Double tap on one of the earbuds to activate either SurroundSense or ANC mode.
3. A short tone will signal the mode switch.
4. Double-tap again at any time on either earbud to switch between the modes.

Also, see How can I hear my surroundings better?.