... Chart Plotter, marine GPS plotter, marine GPS navigation, Works with C-map Max NT Chart and Onwa K-Chart FEATURE:1 ... resolution 5.6 inches day-view LCD display2) Works with C-map Max NT Chart (SD) and Onwa K-Chart3) Quick ... chart colorMemory 1. External SD CardsTwo SD Cards slot for C-map MAX and User SD memory card 2. Internal MemoryBuilt ...