HOMCOM BMW S1000 RR Benutzerhandbuch Seite 76

If you your vehicle with the sound function, follow the steps 1-4
to add the batteries (not included). Refer to the battery information on
page 3.
1. With a small screwdriver remove the screw on the battery cover on the
faceguard.
2. Remove the battery cover from the top of the battery compartment.
3. Insert two AAA batteries in their correct polarities.
4. Replace the battery cover over the battery compartment and fasten with the
screw you removed in step one.
Attach the Faceguard │ 7
4
3
2
1 1