When automotive GPS units say that they are "Bluetooth" what they mean is that you an use them to control a phone (make calls etc). As far as I know the ONLY Garmin units that broadcast directions by Bluetooth are the Zumo motorcycle specific ones.
I use an SMH10 paired with my iPhone for calls/music and my Garmin 665 for directions. The Garmin and Phone are not paired. I voice control the phone from the Sena.
I use an SMH10 paired with my iPhone for calls/music and my Garmin 665 for directions. The Garmin and Phone are not paired. I voice control the phone from the Sena.