Features:

Sunlight-readable, four-level grayscale transflective FSTN display ( 1.5" W x 2.2" H; 2.6" diagonally) ( 160 x 240 pixels)
1 MB of internal memory for storing map detail
Internal memory is preloaded with worldwide cities
Permanent user data storage; no memory battery required
Each day' s best hunting and fishing times— along with sunrise/ sunset times— on the integrated Outdoor Calendar
Special geocaching navigation mode
Geolocation games, such as Virtual Maze, Nibbons, Gekoâ„¢ Smak, and Memory Race
Fast map transfer, with support for both USB and serial port interfaces; navigation instructions can be shared with repeaters, plotters, and autopilots using NMEA protocols through the dedicated serial port
Dedicated " mark" , " page" , " enter" , " quit" , " menu" , " find" , and " zoom out/ in" buttons; four-position rocker pad
2.4" x 6.1" x 1.3" ( W x H x D) unit dimensions
Weighs 5.4 ounces ( without batteries) , 7.5 ounces ( with batteries)
WAAS GPS receiver with accuracy to 10 feet in North America; built-in quad-helix antenna for better satellite reception
28 hours of battery life under typical-use conditions ( uses two " AA" batteries)
Multi-platform navigation for easy navigation in a car or boat, or on foot
Waterproof to IEC 60529 IPX7 standards ( can be submerged in one meter of water for up to 30 minutes)
50 reversible routes, 10, 000 track points with tracBack® technology ( navigate to any track point on the displayed map) , and 500 waypoints with additional graphical icons for location identification
Proximity alerts for anchor drag, arrival, off-course, proximity waypoint; built-in alarm clock
Trip computer provides odometer, stopped time, moving average, overall average, total time, max speed, and more