Navigation
Waypoints/Icons: 500 with name and graphic symbol, 10 nearest (automatic), 10 proximity
Tracks: Automatic track log; 10 saved tracks let you retrace your path in both directions
Route: 50 reversible routes with up to 50 waypoints each, plus MOB and TracBack™; modes
Trip Computer: Current speed, average speed, time of sunrise/sunset, resetable maximum speed, trip timer, and trip distance
Alarms: Anchor drag, approach and arrival, off-course, proximity waypoint, shallow water and deep water
Tables: Built-in celestial tables for best times to fish and hunt, sun and moon rise, set and location
Map Datums: More than 100 plus user datum
Position Formats: Lat/Lon, UTM/UPS, Maidenhead, MGRS, Loran TDs, and other grids including user grid

Performance
Receiver: WAAS-enabled, 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites to compute and update your position
Aquisition Times:
Warm: approx. 15 seconds
Cold: approx. 45 seconds
AutoLocate™: approx. 5 minutes
Update Rate: 1 second, continuous

Accuracy
Position: 7-15 metres
Velocity: 0.05 metres/sec steady state
Dynamics: 6g's
Interfaces: RS232 with NMEA 0183, RTCM 104 DGPS data format and proprietary GARMIN
Antenna: Built-in quadrifilar, with external antenna connection (MCX)

Moving Map Features
Basemap: Detailed basemap with cities, motorways, exit info, rivers, lakes; preloaded with worldwide cities and nautical navaids.
Uploadable Maps: Accepts up to 8 megabytes of downloaded map detail from optional MapSource CDs

Physical
Size: 15.7 x 6.9 x 3.0 cm
Weight: >454 g (with batteries)
Display: 5.6 x 4.1 cm 180 x 240 pixels, high-contrast FSTN with bright backlighting
Case: Fully gasketed, high impact plastic alloy, waterproof to IEC 529 IPX7 standards
Temperature Range: -15°C to 70°C
Data Storage: Indefinite; no memory battery required
Power: 2 AA batteries (not included)
Battery Life: Up to 16 hours