Precision Internal GPS Chartplotting with built-in UniMap cartography Maximize your angling experience with the Humminbird HELIX 5 SI GPS fishfinder GPS system Micro SD card slot for optional maps or for saving waypoints The Humminbird 409640-1 HELIX 5 SI/GPS Combo features a brilliant 800H x 480V, 5″ 256 color display with backlight. Side Imaging/Down Imaging and Dual Beam Plus sonar with 4000 watts PTP power output, Precision Internal GPS Chartplotting with built-in UniMap cartography with […]