Yamaha TW-E7A - Operating this Product; Adjusting the volume

Operating this Product
Adjusting the volume
Follow the steps below to adjust the volume.
R
11
2
2
11
L
22
(
Turn the volume up
Press the function key on earphone (R) twice.
(
Turn the volume down
Press the function key on earphone (L) twice.
NOTE
When connecting to a device (such as a smartphone) on which the volume can be adjusted, you can also adjust the volume using that
device.
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Operating this Product > Adjusting the volume