10U
10
1. Before you install the 10U, remove the cheek pads and ear pads of
your helmet.
2. Align the right speaker with the right cheek pad base and insert the
two clasps in the corresponding notches.
3. Unfasten the two snaps of the center pad in the back and insert the
battery unit between the external shell and the inner shell. Click the
two snaps through the snap holder of the battery unit.