The new PATHFINDER2 series is not compatible with previous generation PATHFINDER series systems.CUT EM LOOSE: The PATHFINDER2 is a complete GPS tracking system with the enhanced Dogtra PATHFINDER2 real time tracking and training app. Explore more and track up to 21-dogs in real time with Dogtra PATHFINDER2. The new PATHFINDER2 is NOT compatible with PATHFINDER series.E-COLLAR FUNCTION BUTTON: The new PATHFINDER2 GPS Connector allows for direct corrections for a quicker response. You have e-Collar command from both the GPS Connector or in app on your smartphone or smartwatch. PATHFINDER2 GPS Connector Smartphone are required to operateSMARTWATCH COMPATIBLE: Smart watch users can now track their dogs from their smartwatch with quick access to the extended PATHFINDER2 dog tracking app that is available for Apple Watch Series 5 and Galaxy Watch4 Series and above. The smartwatch app features access to your GPS receiver, Compass, e-Collar commands, and Maps that provide precise location informationFREE APP, FREE MAPS: No Subscriptions Required and No Monthly Fees. Map views include General, Satellite, and Terrain views. Free maps are powered by Map Box. Offline Maps allow you to save and download maps to be made available in offline mode. Maps provide useful marker settings, notifications, and icons giving you confidence on any adventure.MORE CORRECTION MODES: PATHFINDER2 offers a Nick, Constant, and Audible tone, along with the new LED Locate Light and Pager Vibration. PATHFINDER2 also provides battery saving sleep mode, lost collar locator and lock so you can protect your investment. Explore more with you dogs on all outdoor activities from hiking to hunting with the newest GPS Dog Tracking and Training System. The new Dogtra PATHFINDER2 is a complete GPS tracking and training system featuring a newly redesigned FREE real time tracking and training app, tracking up to 21 dogs within a 9-mile range.* The new PATHFINDER2 system features the latest in dog tracking collars equipped with E-Collar training functions now including a LED Locate Light and Pager Vibration. The new GPS Connector is designed with a new E-Collar Function button for quicker response. The PATHFINDER2 works with a FREE app based dog tracking system with no monthly subscription required, allowing users to track and train their dogs straight from their phone featuring offline maps access with no signal required. The app allows users to: share locations, create custom fences, customize activity modes and access e-collar training features, battery saving sleep mode, lost collar lock, a lost GPS Connector locator and more. Smart watch users can now track their dogs from their watch with quick access to the extended PATHFINDER2 dog tracking app that is available for Apple Watch Series 5 and Galaxy Watch4 and above. The Dogtra PATHFINDER2 App requires the Dogtra PATHFINDER2 system to operate. *Range may vary depending on the surroundings.