Automatic tuning and automatic GAIN. Rain clutter and automatic sea clutter. Switchable pulse-width. Off-center function. Interference Reduction. Zoom function expands the targets. NMEA 0183 format output. Stretch function enlarges the echo images. 2 EBLs and 2 VRMs. Electrical Plotting Aid (EPA) allows you to plot 10 targets and forecast the courses. CPA (Closest point approach) and TCPA (Time to closest point approach) alarm. Man Overboard point (MOB).