The Sparco IS-150 BT Digital Intercom Amplifier is a top of the range professional intercom with digital noise cancelling with selectable adjustment levels and bluetooth connection. It has independent volume adjustment for driver and co-driver, military grade male or female nexus connectors for reliability and an RCA output for video devices or in car camera systems.Roll bar and dashboard attachment complete with anti vibration padDigital noise cancellingHigh quality Nexus connectorsIndependent volume adjustersBluetooth connection for linking with mobile devices* and a 'race' mode which disables mobile communication during special stages. Compatible for use with Sparco, Bell, ZeroNoise, Peltor helmets or intercom headsets and also Stilo when used with an optional adaptor. Connects to a vehicles 12v supply and a 9v battery back up if required.*Please Note - Bluetooth connection is not compatible with iOS devices.