Voice Control VOX technology to initiate, accept or reject calls by voice control (only the unity of the driver contains the BT module). Integrated intercom for communication between rider and passenger Two-way radio between rider and passenger, the driver can start a conversation with the passenger and third time; the interphone can be used WITHOUT phone. Top quality sound Even at high speed, the quality of audio reception is excellent, thanks to technology that AGC automatically adjusts the volume depending on the speed and noise of the surrounding environment. microphone HIB Microphone HIB (High Impact Balancing - Balance high-impact) for use at high speed. excellent durability Headset totally resistant to adverse climatic conditions. Quick and easy installation and uninstallation Auto-installing the entire system in just 5 minutes, leaves no traces on the helmet, and a special clip lets you attach and remove the headset within seconds. perfect compatibility Can be used with both jet helmets with full-face helmets fit virtually every model of helmets on the market.