Hi mate.
That satnav has bluetooth, I have a different satnav but have a bluetooth intercom in my caberg helmet and i can talk, listen to mp3's and hear satnav via bluetooth.. my phone is hooked up, twatnav and memory card in my tomtom with my tunes on so i can listen to my tunes.. I can speak and it will add destination and postcodes ect but with wind and road noise it can be tricky so i usually have to pull over and type destination in and then set off again.. Let us know what your setup is in your helmet ect.