Dynamic Meshwork Communication (DMC) allows two to four riders to change position without interruption of service. Music-sharing: rider and passenger can listen to the same stereo music via A2DP. Cardo Gateway: provides intercom connectivity to non-Cardo headsets. Intercom-to-Mobile: automatically sends intercom to cellphone when range is exceeded. Cardo SmartSet app for Android and ios devices. Customizable Hot-Dial number. Cardo’s unique roller-wheel interface offers intuitive manual operation and is easy-to-use with winter gloves. Built-in FM radio with RDS: six programmable station presets with auto scan. AGC technology: customizable self-adjusting volume according to speed and ambient noise. VOX activation: customizable voice-control for receiving/rejecting incoming mobile and intercom calls. DMC intercom range effective up to three miles Bike-to-bike intercom available up to one mile Rider-to-passenger intercom in full duplex Mobile phone connectivity Easy-to-install Interchangeable hybrid and corded microphones in the same package to suit any helmet Replaceable plug-in high-definition speakers with a 3.5 mm connection Up to 13 hours talk time one week standby Waterproof and dustproof