Tomtom RIDER GPS Devices "cardo headset" Questions

...cardo headset for helmets so that i cold try a different bluetooth headset for use in a car and it didnt work i then tryed to recconect it to my tom tom and it cant find it when searching for it what ...

...headset volume at halfway. My Cardo Scala unit is a Teamset and I sometimes have problems hearing my rider scream that I'm going too fast. I haven't bothered yet to tell her to keep the microphone ...