Thanks to the included mapping, tracking and dog-training Pathfinder app, Dogtras Pathfinder GPS and e-collar now interacts with your smartphone with no cellular data required. This intuitive app provides detailed maps, compass and many e-collar features that will enhance your next coon, grouse or almost any bird hunt. Youll enjoy the fast two-second updates that let you know exactly where your dog is. The open-source map, via your smartphone, delivers easy-to-manage detailed satellite maps, zoom capabilities and an off-line map mode. Add more dogs to the hunt, the Pathfinder system can track up to 21 e-collars at once. For training, you get full e-collar functions, including nick and constant stimulation and tone. 1-100 stimulation levels for any training situation. Custom alerts show dogs actions using pop-ups, soundsand vibrations. History playback lets you review your hunt on your phone or computer. Geofence and alert options for customizable boundaries. Competition modes and easy location sharing. Waterproof collar has a nine-mile maximum signal range. Long-lasting, rapid-charging lithium batteries included. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Tracking Systems.