Sena ACS RAM-01 Arai SZ-R

The Sena ACS-RAM supports 2-way Bluetooth® communication at a range up to 500 meters (0.3 miles). The ACS-RAM features a 3-button control that lets users easily operate the functions of the headset while riding. The ACS-RAM is fully charged in 2.5 hours and offers a talk time of up to 12 hours.