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Discovery 640/645: How To Adjust the Volume


How To: Adjusting the Volume on the Discovery 640/645
There is a black volume bar on the outside of the headset.  To increase the listening volume of the headset, press the upper end(+) of the volume/mute button. To decrease simply press the lower end (-). The microphone volume is set.  There is no way to increase the microphone volume on the headset.