The Bushnell Marine 360500 BackTrack Hunt/Track GPS utilizes GPS technology in its most basic format. The BackTrack has only two buttons and stores up to three locations - just mark it and forget it until its 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 favorite fishing spot or when travelling, even to rendezvous with your group. It is extremely compact and stows conveniently in your pocket, pack or purse.