Product Information : Bushnell BackTrack GPS tracking logger
Manufacturer's product description
BackTrack utilizes GPS technology in its most basic format, BackTrack has only two buttons and stores up to three locations - just mark it and forget it until it's time to return. At the end of the day, select your location and the BackTrack displays direction and distance to travel. Use it to find your car in a crowded parking lot, your treestand or the trailhead, even to rendezvous with your group. It's extremely compact and stows conveniently in your pocket, pack or purse.