The GPS Plotter/Sounder and Radar Cruise 7 with Base Chart 83/200 Transducer by Simrad has screen of 7 inches, with a resolution of 480 x 800 pixels. Additionally, it includes an external memory card slot for easier software and map upgrades. The waterproof design protects the device from water droplets that may enter the device during boat navigation. The maximum operating depth of the sounder sensor is 196 meters. It comes with pre-installed Navionics maps for immediate use of the device. Finally, the device's antenna is integrated but also supports the ability to connect an external antenna.