Garmin GSD 25 Premium Sonar Module New Condition. For use with GPSMAP 8000 Glass Helm and GPSMAP 7400/7600 Series MFDs. Features of Garmin GSD 25 Premium Sonar Module: Premium remote network sonar solution True dual-channel 1 kW CHIRP plus CHIRP SideVu and ClearVu scanning sonar Depth capability to 5 000 feet Included Accessories: GSD 25;ight-angle power cable (6 feet);Right-angle network cable (6 feet);Mounting hardware;Documentation Documentation Package Contents: Garmin GSD 25 Premium Sonar Module Garmin 010-01159-00: GSD 25 Premium Sonar Module New Condition