The GPS Add-On Tracking and Training Collar expands your existing tracking system by allowing you to add another dog with precise long-distance monitoring and customizable training options. Built for demanding outdoor conditions, the collar features a rugged, waterproof design that remains reliable even when fully submerged, along with long-lasting rechargeable power and low-battery alerts for consistent performance. Its lightweight, compact construction supports multiple stimulation modes—including continuous, momentary, and rising levels—offering flexible control for various training needs. With an impressive range suitable for large properties or field work, this add-on collar integrates seamlessly with compatible systems to deliver dependable tracking and responsive training in real-world environments.