Brunton Get-Back Mini GPSQuickly shows the way back to your starting point by the shortest, most direct route. Can also be used as a self calibrating digital compass, with or without satellite coverage. Measures 2 3 4" x 1 1 2" x 1 2". Accuracy of 12 feet in normal GPS mode. Three waypoints to find your way back to 3 different locations. Arrival notification within 30 feet of destination. Rechargeable battery with up to 13 hours of continuous use. Signal Strength indicator.