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Basemap: Built-in Americas Highway, Atlantic Highway or Pacific Highway basemap with oceans, lakes, rivers, cities, interstates or major motorways, principal and major thoroughfares and political boundaries.

Data Cartridge: Preprogrammed micro cartridges containing detailed BlueChart® marine cartography.

MapSource®: Compatible with most Garmin® MapSource products including MapSource BlueChart marine cartography, MetroGuide®, and Fishing Hot Spots®. Garmin data card required.

Waypoints/icons: 3000 with name and graphic symbol, and comments, as well as proximity support

Routes: 50 reversible routes with up to 254 points each, plus MOB and TracBack® modes

Tracks: 2500-point automatic track log; 15 saved tracks; 500 points per saved track let you retrace your path in both directions

Trip computer: Trip odometer, stopped time, moving average, moving time, total average, total time, maximum speed, odometer

Alarms: Anchor drag, arrival, off-course and proximity waypoint, clock, shallow water, and deep water

Tables: Built-in celestial tables for best times to fish and hunt, sunrise and sunset, sun and moon by date and position

Map datums: More than 100 plus user datum

Position format: Lat/Lon, UTM/UPS, Maidenhead, MGRS, Loran TDs and other grids, including user grid

Receiver: WAAS-enabled, 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites to compute and update your position

Acquisition times:

• Warm: Approximately 15 seconds
• Cold: Approximately 45 seconds
• AutoLocate®: Approximately 2 minutes

Update rate: 1/second, continuous

GPS accuracy:

• Position: < 15 meters, 95% typical*
• Velocity: 0.05 meter/sec steady state

• Position: 3-5 meters, 95% typical*
• Velocity: 0.05 meter/sec steady state

• Position: < 3 meters, 95% typical*
• Velocity: 0.05 meter/sec steady state

Dynamics: 6 g's

Interfaces: RS232 with NMEA 0183, RTCM 104 DGPS data format and proprietary Garmin

Antenna: Removable quad-helix

Differential: DGPS (USCG and WAAS capable)

Source: Four "AA" batteries (not included)

Battery Life: 4 to 16 hours based on backlight setting

Size: 3.40"H x 6.18"W x 2.25"D

Weight: Approx. 1.5 lbs. with batteries

Display:

• 3.8" diagonal, high resolution
• 320 x 240 pixels
• (GPSMAP® 176C) 16-color transflective display with backlighting
• (GPSMAP 176) 12-level gray high-contrast FSTN with backlighting

Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 529 IPX7 standards

Temperature range: 5°F to 158°F (-15°C to 70°C)

User data storage: Indefinite, no memory battery required