These collars are GPS-Only collars for the Dogtra Pathfinder GP Tracking System

The Dogtra Pathfinder brings advanced GPS tracking technology right to your smartphone. Built for hunting competition and events, the Dogtra Pathfinder provides the most accurate and responsive way to track your dog!

Compatible with Google Maps, there are no extra navigation packages to purchase. You can also download free maps and operate your smartphone in the offline map mode.

Features:

Smartphone GPS tracking and training : No cellular data required
GPS Tracking Only (NO E-collar Functions)
Expandable to 21 additional GPS Collars and Pathfinder users
9-mile line-of-sight range to cover your most active runner
Fully waterproof for use in all environments
Long-lasting, rapid charge lithium polymer batteries