The Lowrance HDS-10 Gen2 Fishfinder works on the GoFree technology that provides wireless chartplotting and sonar-display viewing on smart gadgets. It has a 10.4-inch, 16-bit color Super-VGA SolarMAX PLUS TFT display, and a high-bright pure-white LED backlight, for a crisp-viewing experience. This device has the StructureScan HD sonar module, built-in GPS antenna, and programmable softkeys.