Sena Bluetooth SMH10R v4.3 User's Guide - Manual (Page 50)

SMH10R
50
WARNING
Sena informs you that using this device in public traffic may not
be authorized by the law. Please check your local laws and do
not use this device in public traffic, but only on private property or
closed circuits. If the simultaneous use of both ear speakers while
riding a motorcycle is prohibited by your local law, please use only
a single ear speaker while riding. Sena denies any liability should
you choose not to respect this warning.
Using the headset at loud volumes may be harmful to your
eardrums and cause hearing loss. Please maintain a proper
volume level to protect your ears.