Sena Bluetooth SMH3 1.0 User's Guide - Manual (Page 14)

SMH3
14
GPS Pairing as Mobile Phone
If GPS is not only used for turn-by-turn voice instructions but also is your
preferred Bluetooth stereo music source, you can pair the GPS to the
SMH3 by following the simple procedures in “Mobile Phone Pairing”.
When you do this, the SMH3 thinks the GPS is a mobile phone. But the
SMH3 can directly pair an additional mobile phone.
Note:
You have to use a motorcycle specific GPS which transmits turn-by-turn
voice instruction to the headset by Bluetooth. Most automotive GPS systems
don’t have this feature.
GPS Navigation Mobile Phone
SMH3
HFP
HFP
+
A2DP
Multipoint
Pairing Mobile Phone
Pairing
GPS Pairing as Mobile Phone