If you're looking for a 2-rider communication system, the Cardo Freecom 2x is the unit for you. Waterproof, jog-dial and over-the-air software updates.
Cardo Freecom 2X Duo FRC2X103 Bluetooth Intercom Headset for 2 Riders
Freecom 2x Support - Cardo Systems
Motovlog Build Cardo Systems Freecom 2X Install
A replacement module for Freecom 2x. Only the main unit.
Freecom 2x replacement module
World’s best Bluetooth communication system. Just say “hey Cardo” and tell it what you want, your FREECOM 4X will do the rest.
FREECOM 4X - Cardo System
Cardo Freecom 2x
Cardo Freecom 2X Duo FRC2X103 Bluetooth Intercom Headset for 2 Riders
CARDO FREECOM 2X - ™
Cardo Systems FREECOM 2X Motorcycle 2-Way Bluetooth Communication System Headset - Black, Single Pack : Automotive
Freecom 2 Support: manual, app & accessories — Cardo Systems
Cardo FRC2X103 Duo Freecom 2X Bluetooth Communication System