The Garmin GPSMAP 78S is a Handheld GPS unit built and designed for the treacherous marine environment. The Garmin 78S is preloaded with a shaded relief map for the US and has a built in 3-Axis electric compass and barometric altimeter.
If you?re searching for a handheld GPS you can use on the boat as well as on your next hiking, hunting or geocaching adventure, the GPSMAP 78S is your unit. Housed in a durable casing, this rugged handheld is designed to handle the tough marine environment. Rubber grips have cleverly been added to the sides of the unit to prevent it from slipping out of your hand. However the GPSMAP 78S is waterproof, meets IPX7 standards and floats, so it is safe if it takes an unexpected dip in some water.