Single Rider/Rider to Passenger 2-way Bluetooth Communication System Plug-and-play Bluetooth® system with rider-to-passenger communication. Dual hands-free profile allows connection of two Bluetooth®-enabled mobile devices, GPS. Receive in-helmet navigation instructions from compatible GPS devices. Customizable voice-control for receiving and rejecting incoming mobile calls. Stereo Bluetooth (A2DP) enabled for wireless music streaming from iPod® or Android™ devices. Parallel Audio Streaming allows GPS instructions to continue while listening to A2DP stereo music or during an incoming call. During phone conversations, music and radio are muted. Downloadable Cardo SmartSet™ app for device customization and settings can turn a smartphone into a handlebar-mounted remote control. Cardo Community® online platform for personalizing device settings and software updates. Customizable self-adjusting volume according to riding speed and ambient noise. Customizable volume-per-mode for music, radio, mobile and intercom. Customizable speed dial and multilingual spoken status announcements about battery level, radio and connected devices. Multilingual built-in menus for easy operation and customization.