Dogtra Pathfinder2 Additional Receiver Black 1409827. Designed for rugged conditions this waterproof GPS collar features a 9-mile range and supports both Nick and Constant stimulation vibration tone and an LED locate light for added visibility. It is compatible exclusively with the PATHFINDER2 GPS Connector and App allowing tracking of up to 21 dogs with access to geo-fence features offline maps and real-time positioning. Ideal for hunters and trainers this collar is built for dogs as small as 35 pounds. Specifications for Dogtra Pathfinder2 Additional Receiver: Manufacturer: Dogtra Color: Black Features of Dogtra Pathfinder2 Additional Receiver: Compatible with Dogtra PATHFINDER2 system only 12-inch neck size 9-mile GPS tracking range 0?100 stimulation levels with Nick and Constant modes Non-stimulating pager vibration Audible tone LED locate light Fully waterproof receiver 2.5-hour battery Geo-fence capability Offline maps and real-time updates Tracking-only mode option Expandable to 21 dogs For dogs as small as 35 lbs Includes one PATHFINDER2 GPS collar and USB charger (BC 5V 2500mA) Package Contents: Dogtra Pathfinder2 Additional Receiver