Gizmos and Gadgets - Garmin GPSMAP 78s For boaters and watersports enthusiasts who want to run with the best, the rugged GPSMAP 78s features a 3-axis compass, barometric altimeter, crisp color mapping,
Garmin GPSMAP® 78 | Handheld Marine GPS
Garmin GPSMAP 78 Battery Cover
Looking at the satellite screen in a Garmin GPSMap 78 series @ GPScity - YouTube