Bought these when I restored my motorcycle. Works good except for when the speeds get elevated (way above legal limit) and then you cant hear because of wind noise. But then again at that point, I've got other things on my mind.
BT to phone, stream music through both driver and passenger. Connect to other brands like Sena easily. Easy one mile range through twisty sections of road. Not sure about cold weather usage though. That might be a consideration as the unit sits on the outside of the helmets and would be exposed to the wind chill factor? Possibly all of the motorcycle unit could affected in the same way?
J.