Electronic Map with Sensors (High Sensitivity GPS Receiver using SiRF, Incorporates a Barometric Altimeter for Accurate Elevation and Vertical Profile, Built-in Americas Autoroute Basemap with Automatic Routing Capabilities, Built-in Celestial Tables, Plus Sun and Moon Calculations, 10, 000 point automatic track log 20 saved tracks, Audible Alarms for Anchor Drag, Arrival, Off-course, Proximity Waypoint
