The Dogtra PATHFINDER family of GPS tracking collars for hunting dogs is packed with features and industry leading accuracy that delivers modern technology directly to your smartphone. Our GPS tracking collars for hunting dogs currently come in three different models: PATHFINDER2, PATHFINDER2 TRX, and PATHFINDER MINI. These tracking collars & equipment allow hunters, professional handlers, and K-9 and military officers to track as many as 21 dogs with a range of up to 9 miles. Whether the trainer is running exercises, out in the field, or attending competitions, never has there been a more responsive, accurate, and convenient way to track and train dogs.