Cardo Scala rider SMARTPACK Bluetooth and DMC Mesh Technology Motorcycle DUAL The world leader in motorcycle communicators. Connecting riders since 2004. Dual-technology: DMC (Dynamic meshwork communication) and Bluetooth 4.1 operate simultaneously. Cardo gateway allows universal pairing to any Bluetooth headset DMC mesh networking connects up to 4 riders for long-range intercom with unimaginable stability, eliminates daisy-chain pairing structure of Bluetooth headsets Parallel audio streaming technology allows intercom conversation while simultaneously listening to music, FM radio, or GPS for every rider in the group Waterproof/dustproof, Self-Adjusting volume, music sharing, SmartSet App remote control/customization, voice recognition Waterproof/dustproof, Self-Adjusting volume, music sharing, SmartSet App remote control/customization, voice recognition. *To use with Half Helmets please purchase the Cardo Boom Cradle for Smartpack