ChatterBox XBi Full Face Intercom Kit - -- Both rider and passenger module is capable of pairing with up to two accessory devices at the same time. (ex. iPod, Mp3, satellite radio, GPS, cell phone, radar detector). The XBi utilizes SMART technology that will automatically prioritize the transmission of the paired devices. The XBi is so far advanced that it can even stream music from one module to the other. Each module is also capable of being used by itself to pair accessories when riding alone. Other features include, lithium polymer rechargeable battery with 6-8 TRUE hours of power, 1 hour express charge, and compact aerodynamic module design.