This package starts with a C120 multifunction display. Next the Raystar 125 provides GPS with WAAS capability. The DSM30 digital sounder module enables Raymarine’s exclusive HD Digital fishfinder technology on the large C120 12.1” display. Plus the C120 system pack features the new RayTech Planner Software and a tutorial CD-ROM.The C120 system pack contains: C120 12.1" Multifunction Display, Raystar 125 GPS, DSM300 HD Digital Sounder Module.