AW: During the navigation announcement, the volume of the voice announcement can be adjusted by the “+” and “-“ sensor buttons on the device front panel, as well as via horizontal volume scale pop-up.

Adjustments performed during a navigation announcement are retained.

In the cockpit mode of the Z-EMAP76 navigations software (map view), there are PLUS and MINUS buttons in the top right corner to adjust the volume of the navigation voice message at any time.