The company claims that the G4 is the "first Bluetooth headset to offer group intercom between up to three riders as well as communication among two riders and their two passengers on two bikes at distances up to 5, 280 feet, " and if A2DP audio streaming is your thing, you'll find support for that as well.

ENGADGET: Scala Rider G4 Bluetooth headset enables four-way biker communication

Aside from boasting an integrated Bluetooth chip for handsfree calling and voice activation, there's also a built-in FM radio and an intercom system that enables up to four riders to communicate within a full mile of one another.

ENGADGET: Scala Rider G4 Bluetooth headset enables four-way biker communication