Adjust the alert-tone volume on your earphones in the Beats app for Android
The Beats Fit Pro and Powerbeats Pro earphones play different alert tones when connecting to (or disconnecting from) a device, when the battery is low, when switching between noise cancellation and transparency, and so on. You can change the volume of the alerts.
In the Beats app for Android, tap , then tap My Beats to display the device screen.
Scroll down to Tone Volume, then drag the volume slider left or right.