Adjusting Volume On Your Headset
First, we suggest using headphones if you are in a busy or noisy area. Any pair of headphones with a 3.5mm audio jack will work. Check to make sure the audio pin is properly inserted into the audio jack.
Then, with the headset powered on, adjust the volume level by pressing the volume adjuster keys on the bottom surface of the headset. The adjuster is labeled with + (increase) and - (decrease).
If you are having difficulty adjusting your volume or hearing sound, please read this help article.