Whistler BT3200 Bluetooth v2.0 Hands-Free Kit for Motorcycles & Scooters - 7 Hour Talk Time/330ft Whistler BT3200 Bluetooth v2.0 Hands-Free Kit "Bike to Bike" Communications Easy Installation via Clip-On Mounting System or Double Sided Tape Mount - Fits to most any open face (3/4) helmets Intercom Range: 100 meters (330-feet) Usage Time, Speaking/music/intercom: Approximately 7 hours