Garmin GPSMAP 78S


Weight 7.7 oz / 218.3 g with batteries
Dimensions 2.6 in x 6.0 in x 1.2 in / 6.6 cm x 15.2 cm x 3.0 cm
Display size 1.43 in x 2.15 in / 3.6 cm x 5.5 cm, 2.6 in diag / 6.6 cm
Display resolution 160 x 240 pixels
Display type transflective, 65-K color TFT
Battery 2 AA batteries, not included), NiMH or Lithium recommended
Battery life 20 hours
Waterproof yes (IPX7)
Floats yes
High-sensitivity receiver yes
Interface high-speed USB and NMEA 0183 compatible

Where to Buy

sponsored links

Manufacturer's Description

Visit Garmin's GPSMAP 78S page.

Retailers' Descriptions

Here's what other sites are saying:

Garmin's boating-specific GPS Map 78S includes an electronic compass as well as a high-sensitivity receiver and floatable housing. The electronic compass uses a 3-axis tilt to show your heading whether you're standing still or spinning around on a paddle boat. With a WS-enabled GPS and HotFix satellite prediction, the GPS Map 78S locates your position quickly and maintains your location in deep canyons. USB computer compatibility lets you download detailed marine, topographic, road, and hiking maps for versatile adventures. There's a built-in memory with 1. 7GB of space, and Garmin added a slot for your own microSD memory card. The dual battery system accepts two standard batteries, lithium, or NiHM battery packs.


For boaters and watersports enthusiasts who want to run with the best, the rugged GPSMAP 78 features crisp color mapping, high-sensitivity receiver, new molded rubber side grips, plus a MicroSD card slot for loading additional maps. And it floats! The GPSMAP 78S has a built-in 3-axis tilt-compensated electronic compass, which shows your heading even when youre 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 to keep an eye on changing weather conditions. Wt: 7.7 oz.

- Mountains Plus

The Garmin GPSMAP 78s GPS is a waterproof, marine-friendly unit that floats. It features a sleek and contemporary design, high-sensitivity receiver and built-in compass and altimeter. Bright, sunlight-readable 65K TFT display measures 2.6 in. (240 x 160 pixels) and presents imagery in crisp and colorful detail. High-sensitivity, WAAS-enabled GPS receiver features HotFix(TM) satellite prediction for a rapid first fix and reliable performance in urban canyons or under dense foliage. WAAS (Wide Area Augmentation System) technology can pinpoint your position to 3m or better. Worldwide shaded-relief basemap supports Garmin custom maps and BirdsEye(TM) satellite imagery (custom maps and satellite imagery sold separately). MicroSD(TM) card slot enables expanded memory and the option of additional mapping (microSD card sold separately). High-speed USB connectivity makes loading charts and maps quick and easy; interface cable included. Marine-friendly unit floats and features a dedicated "Man Overboard" emergency button and meets IEC 60529 lPX7 standards (can be submerged to 1m for up to 30 min.). Enjoy effortless sharing of waypoints, tracks, routes and geocache locations between compatible units with ANT wireless capability. Built-in 3-axis compass and barometric altimeter provide a steady bearing, altitude and atmospheric pressure trends. Navigation instructions can be shared with repeaters, plotters and autopilots using NMEA protocols through the dedicated serial port. Comes with a USB cable, wrist strap and quick start guide. The Garmin GPSMAP 78s operates for up to 20 hrs. on 2 AA batteries (sold separately).