Features:
Water-resistant (IPX7) with a high-resolution color display you can read in the sun
If rough waters come and the handheld goes overboard, don't worry - this device floats
User-replaceable AA batteries (not included) provide up to 19 hours of battery life in GPS tracking mode
With support for multiple satellite constellations - such as GPS, GLONASS, Galileo, QZSS and SBAS - you'll get accurate, reliable tracking and positioning around the world
More memory than previous models means you can save and track 10,000 waypoints, 250 routes and 300 fitness activity files
3-axis tilt-compensated electronic compass shows your heading - even while the boat is standing still
Specifications:
Lens material: Chemically strengthened glass
Dimensions (W x H x D): 2.67" x 6.85" x 1.67" (6.77 x 17.40 x 4.23 cm)
Weight: 9.95 oz (282 g)
Waterproof: IPX7
MIL-STD-810: Yes (thermal, shock, water); bare unit only
Display type: Transflective, 65K color TFT
Display size (W x H): 1.5" x 2.5"; 3" diagonal (3.8 x 6.3 cm; 7.6 cm diagonal)
Display resolution: 240 x 400 pixels
Battery type: 2 AA batteries (not included); NiMH or Lithium recommended
Battery life: Up to 19 hours
Memory/history: 8 GB
Interface: High speed microUSB and NMEA 0183 compatible
Basemap: Yes
Map segments: 15,000
Waypoints/favorites/locations: 10,000
Tracks: 250
Navigation track log: 20,000 points, 250 saved gpx tracks, 300 saved fit activities
Navigation routes: 250, 250 points per route; 50 points auto routing
Included:
GPSMAP 79s
Lanyard
USB cable
Documentation