The Icom IC-900A is a new approach to mobile operating. The IC-900A system includes the remote controller, Interface Unit A, Interface Unit B, speaker and hand mic. Then you can add up to a maximum of six band units. Please note that no band unit is initially supplied with the IC-900A. You must add at least one band unit to have an operational radio. The band units shown above are each sold separately. This model requires 13.8 VDC at 12 amps.