Product description from Garmin:
The Garmin GPS 12 Personal Navigator is an affordable 12 parallel channel
handheld for outdoor adventurers who want a basic, hard-working 12-channel
GPS, but who don't want to spend a bundle. Based on the popular GPS 12XL,
the GPS 12 offers outdoor enthusiasts an entry-level way to gain the power
and performance of a 12-channel receiver with fast satellite acquisition
in the toughest conditions—even in heavy tree cover.
The GPS 12's rugged, waterproof case features military-tough construction, and its rocker keypad design provides true one-hand operation that keeps you on the move—day or night, rain or shine. It also features 500 available waypoints and 1024 track log points, nine proximity waypoints to mark and steer clear of dangerous areas, and Garmin's innovative TracBack function—a feature that turns your track log into an instant breadcrumb trail and allows you to reverse your route in order to quickly navigate back home. As an added bonus, the GPS 12 also boasts a position averaging feature which diminishes the effects of Selective Availability (SA) upon position error and displays a value that reflects the estimated accuracy of the averaged position.
Include a host of advanced navigation features like enhanced moving map graphics, average and maximum speed data, and trip timers, and you have all the things that make the GPS 12 a purebred Garmin—innovation, performance, and value.