Raymarine RV-100 RealVision 3D All-In-One Transom Mount Transducer [A80464]RealVision 3D All In One Transom Mount Transducer Raymarines RV 100 All In One Transom Mount Transducer lets you easily identify structures and locate fish with the life like clarity of RealVision 3D sonar. The RV 100 is a 4 channel, Wide Spectrum CHIRP transducer with DownVision, SideVision, high frequency CHIRP fish targeting and RealVision 3D sonar inside. The transducer has a built in attitude and heading reference system (AHRS) that stabilizes