You can customize the data shown on the sonar screen.

From a sonar screen, select > Overlay Numbers.

Navigation Inset

Shows the navigation inset when the vessel is navigating to a destination.

Compass Tape

Shows the compass tape data bar.

Device Voltage

Shows the voltage of the device.

Depth

Shows the transducer's current depth.

Speed

Shows the vessel's current speed.

Water Temp.

Shows the current water temperature.

Time of Day

Shows the current time of day.