Enhanced Recording Sonar/GPS+WAAS A professional sonar/GPS+WAAS unit with all the professional tools. The LCX-25C displays an incredible 480V x 640H resolution on a large 7" diagonal, 256-color TFT screen. Also compatible with NMEA 2000r networks. You get the choice of a dual- or single-frequency transducer, and with or without the GPS+WAAS antenna. And record/playback your sonar graphs and GPS details to MMC/SD cards, or load custom mapping via the two waterproof MMC/SD card slots.