The best ... GPS navigation systems

Garmin GPSMAP 640

Waterproof and equipped with “both road and marine maps and modes,” this system can pull “double duty” on a car or a boat.

Price: $1,200; Contact: Garmin.com

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Source: Popular Mechanics

Magellan Triton 2000

This “Swiss Army knife of the GPS world” has a flashlight, a two-megapixel camera, and a “geotagging voice recorder.”

Price: $500; Contact: Magellangps.com

Source: Outside

eTrex Venture HC

Outfitted for the outdoors, this waterproof device shows off-road locations and includes a hunting and fishing calendar as well as sun and moon cycles.

Price: $170; Contact: Garmin.com

Source: Popular Mechanics

Garmin Approach G5 Golf GPS

This model comes “preloaded with maps of thousands of courses” and can show the distance to any course target.

Price: $500; Contact: Garmin.com

Source: Popular Mechanics

Dash Express

The Dash Express “receives real-time traffic updates” and can connect to cell and Wi-Fi networks.

Price: $400, plus $13 per month; Contact: Dash.net

Source: Outside