Built for hunting competition and events, the Dogtra Pathfinder TRX provides the most accurate and responsive way to track your dogs. Compatible with Google MAPS, there are no extra navigation packages to purchase. You can also download the free maps and operate your smartphone in the offline map mode without using cellular data. Designed to meet Dogtra's industry leading quality standard, the Pathfinder TRX is built to withstand any outdoor surroundings for working, hunting and competitive situations. For dogs as small as 35 lbs. nSystem includes GPS Connector, GPS collar, battery charger and splitter cable, Test light, owner's manual, carrying case, contact point extensions and adjustment tool and non-stimulation contact point covers. Features n 9-mile rangen 2-second update raten Geo-Fence optionn Expandable to 21 dogsn Fully waterproofn 3.5 hour rapid charge batteriesn No stimulation