If it seems like communication between on-road motorcyclists just keeps getting easier, Cardo intends to keep that trend alive. The latest version of Cardo Systems' popular Scala rider Bluetooth headset, the G4, offers compatibility with any number of Bluetooth-enabled devices (phones, GPS units, etc) , an embedded FM radio, and mobile phone support as well as voice activation. Cardo says the Scala rider G4 is the first Bluetooth headset to offer group intercom capability between up to three riders as well as communication among two riders and their passengers on two bikes up to one mile. The G4 automatically adjusts the headset volume based on noise and speed, and features a noise canceling microphone and weather-resistant design. Talk time with the rechargeable battery is up to 10 hours and the G4 fits virtually all 1/2 and full-face helmets. The G4 retails for $279.95. See www.cardosystems.com for details.