"Deeper" portable sonar enables Boat Mode to create your personal bathymetric maps REALTIME

The new mode allows you to create your personal bathymetric maps which are displayed on your device in real-time. The Mapping feature enables you to instantly monitor the bottom contour detail, depths, and locate the best fishing areas. All of the collected data are stored on your device for future use. The 4.0 Boat mode update is totally free and compatible with all Deeper sonars.