Garmin eTrex Specifications

As quoted by Garmin:

Navigation Features

Waypoints/Icons: 500 with name and graphic symbol

Tracks: Automatic track log; 10 saved tracks let you retrace your path in both directions

Route: 1 reversible route with up to 50 waypoints

Trip computer: Current speed, average speed, time of sunrise/sunset, resetable maximum speed, trip timer, and trip distance

Map datums: More than 100

Position format: Lat/Lon, UTM/UPS, Maidenhead, MGRS and other grids

Performance

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

Acquisition Times:

• Warm: approx. 15 seconds
• Cold: approx. 45 seconds
• AutoLocate™: approx. 2 minutes

Update Rate: 1 second, continuous

Accuracy:

• Position: 15 meters (49 feet) RMS*
  
• Velocity: 0.1 knot RMS steady state
  

Dynamics: 6g's

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

Antenna: Built-in patch

Physical

Size: 4.4"H x 2.0"W x 1.2"D (11.2 x 5.1 x 3.0 cm)

Weight: 5.3 ounces (150 g) with batteries

Display: 2.1"H x 1.1"W (5.4 x 2.7 cm) high-contrast LCD with bright backlighting

Case: Waterproof to IEC 529 IPX7 standards

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

Data storage: Indefinite; no memory battery required

Power

Source: 2 AA batteries (not included)

Battery Life: Up to 22 hours