Cobra"s GPS100 is a great Compact GPS. The Cobra GPS100 also has Great Accuracy and Features! Take the GPS100 with you if hiking, boating, or on a road trip, you can find your way with the GPS100 global positioning system from Cobra. This little GPS is well made and good looking. Compare to the Garmin eTrex for size and appearance. The Cobra GPS100 is water proof, easy to use and twice as fast as other brands. 18 parallel channel GPS continuously tracks and uses up to 18 satellites to compute and update users position giving the quickest acquisition time of any handheld recreational GPS receiver available today! No more useless waiting for results! Lock on and get your data without waiting.