To adjust volume on your glasses, swipe forward on the touchpad to turn up volume and swipe back to turn down volume. You can check how the volume sounds to people around you by removing your glasses while media is playing. You can also adjust the volume of system sounds in the Facebook View app. Some examples of system sounds include low-battery warning and a sound to indicate you're taking a photo. To adjust the volume of system alerts: 1. From the Stella app, tap on your profile photo in the top right. 2. Tap System Alerts. 3. Tap System Sounds.