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, high-sensitivity receiver, new molded rubber side grips, plus a microSD™ card slot for loading additional maps. And it floats!
Automatic routing (turn by turn routing on roads)
Custom maps compatible
Sun and moon information
Ability to add maps
Custom POIs (ability to add additional points of interest)
Unit-to-unit transfer (shares data wireless with similar units)
Explore - GPSMAP 78s comes with built-in worldwide basemap, so you can navigate anywhere with ease. And, like the rest of the 78-series, 78s is IPX7 waterproof and even floats in water.
Share Wirelessly - With GPSMAP 78s you can share your waypoints, tracks, routes and geocaches wirelessly other compatible device users. Now you can send the location of your favorite fishing spot to a friend to find. Sharing data is easy. Just press “send” to transfer your information to similar units.
Keep Your Fix - With its high-sensitivity, WAAS-enabled GPS receiver and HotFix™ satellite prediction, GPSMAP 78s locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear — whether you’re in deep woods or just near tall buildings and trees, you can count on GPSMAP 78s to help you find your way when you need it the most.
Get Your Bearings - GPSMAP 78s has a built-in 3-axis tilt-compensated electronic compass, which shows your heading even when you’re standing still, without holding it level. Its barometric altimeter tracks changes in pressure to pinpoint your precise altitude, and you can even use it to plot barometric pressure over time, which can help you keep an eye on changing weather conditions.
Add Maps - Adding more maps is easy with our wide array of detailed marine, topographic and road maps, available on microSD card. Conveniently plug in BlueChart® g2 preloaded cards (sold seperatley) for a great day on the water or City Navigator NT® map data (sold seperatley) for turn-by-turn routing on roads. The card slot is located inside the waterproof battery compartment, so you don't have to worry about getting it wet. GPSMAP 78s also supports BirdsEye™ Satelitte Imagery (required subscription through Garmin), that lets you download satellite images to your device and integrate them with your maps.
Get Connected - You've been busy exploring and now you want to store and analyze your activities. With a simple connection to your computer and to the Internet, you can get a detailed analysis of your activities and send tracks to your outdoor device using Garmin Connect™. This one-stop site offers an activity table and allows you to view your activities on a map using Google™ Earth. Explore other routes uploaded by millions of Garmin Connect users and share your experiences on Twitter® and Facebook®. Getting started is easy, so get out there, explore and share.
Find Fun - GPSMAP 78s supports geocaching GPX files for downloading geocaches and details straight to your unit. By going paperless, you're not only helping the environment but also improving efficiency. GPSMAP 78s stores and displays key information, including location, terrain, difficulty, hints and descriptions, which means no more manually entering coordinates and paper printouts. Simply upload the GPX file to your unit and start hunting for caches. Slim and lightweight, 78s is the perfect companion for all your outdoor pursuits.
In the Box:
GPSMAP 78s Physical Specifications
Display size (w x h)
Display resolution (w x h)
3.6 x 5.5 cm
(1.43 x 2.15 in)
160 x 240 pixels
(65-K color TFT)
6.6 x 15.2 x 3.0 cm
(2.6 x 6.0 x 1.2 in)
GPSMAP 78s Maps and Memory Specifications
Accepts data cards
10000 points, 200 saved tracks
microSD™ card (not included)
GPSMAP 78 Battery and Interface Specifications
2 AA batteries (not included);
NiMH or Lithium recommended