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I would love to use it to talk to my girlfriend when we go bike riding. I was shocked by the price tag for all the motorcycle helmet comms systems.

If you're looking at the premium segment then yeah, when you're going out with your several mates and need to be able to hear every one of them.

For one rider to one rider you can get a very decent set well under $100 (Lexin b4fm, FredConn, even Thokwok is well reviewed).