Originally Posted by
robow
I know nothing about these but a friend of mine and his wife communicate with one another while on their bikes using a small headset system from a company called Vertix. He claims they have a fairly decent distance of communication but then again, we're flatlanders. Best of luck and hope you can find something that works for you.
https://www.vertixglobal.com/
Looks cool, but way too expensive for the dopey ten-mile rides I take my wife on. Thanks for the suggestion, though.