shokz OPENRUN PRO - Adjusting Volume

How to change volume:
While your audio is playing, adjust headphone volume by
pushing either the Volume + or Volume ‒ buttons.
Operate volume controls
while audio is playing.
Volume
*Listening with headphones at high volume may affect your hearing
and the audio will be distorted.
*A “beep” will sound when the volume is at its max.
Power/Volume + Button
Volume - Button
VOLUME
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