Bushnell BackTrack Original G2 GPS Personal Locator and Digital Compass Ergonomic shape Small & lightweight Advanced technology Compact GPS personal locator with intuitive 2-button design and ergonomic shape High sensitivity GPS receiver and self calibrating digital compass Stores up to 3 locations; returns you to your car, home base, or anywhere else Compact size to store in your pocket or purse; 20% smaller than the original BackTrack Weather-resistant; operates on 2 AAA batteries (not included)