Nokia Stereo Bluetooth Headset BH-905 - How do I adjust the volume on my Nokia Bluetooth Stereo Headset BH-905?

To adjust the volume on your Nokia Bluetooth Stereo Headset BH-905, press the volume up or down key during a call or while listening to music. To adjust the volume quickly, press and hold either key.

You can also adjust the volume on the connected device if it supports this feature with the headset.