:. . Marine Radar 18"-24": 20"-25.4" Diameter, 9.8" High MotionScope Technology Waterproof (IPX7) Antenna Sweep: Up to 60 rpm (Depending on Settings) 50W Fantom Radar w/ 48-Nautical Mile (nm) Capability. - 18x: 5.2 & deg: Horizontal & 25 & deg: Vertical Beamwidth. - 24x: 3.7 & deg: Horizontal & 25 & deg: Vertical Beamwidth Configure Display by Splitting the Screen. - Show Overlay & Standard Radar Simultaneously Garmin Marine Network Compatible Range: 6 meters Min / 48 Nautical Miles Max Radome Radar Type MARPA Target Tracking. - Collision Avoidance Guard Zone Alarm Dual Range Support Dynamic Auto Gain & Dynamic Sea Filter. - Provide Optimal Performance in Varying Conditions Timed Transmit Easy to Install & Start Overlay Echo Trails Autobird Gain Target Size Scan Averaging..