GPS e-Trex Summit receiver with built-in antenna Wrist strap Owner's manual Quick reference guide CARACTERISTICAS 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: 20 reversible routes with up to 50 waypoints (available only by the free update offered on this website) 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 Electronic compass features Accuracy: ±5 degrees with proper calibration (user Resolution: 1 degree Barometric altimeter features Accuracy: 10 feet with proper calibration (user and/or automatic calibration) Resolution: 1 foot Range: -2,000 to 30,000 feet Elevation computer: Current elevation, resetable minimum and maximum elevation, ascent/descent rate, total ascent/descent, average and maximum ascent/descent rate Pressure: Local pressure (mbar/inches HG), 12-hour automatic pressure trend recording 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 16 hours (typical use) Specifications are subject to change without notice.