The rugged, versatile SportHunter® 825 maximizes all of the advanced, industry-leading technology that SportDOG™ Brand has ever built into its e-collars. The system provides long-range capability – up to 1/2 mile, making it well-suited for long-distance control of retrievers and big-running pointing dogs. Switch instantly between stimulation, vibration, and tone to fit the correction or communication to your dog’s temperament and learning ability. This new 825 Model is an upgraded replacement for the SportHunter 800. The SportHunter® 825 can be easily expanded to control up to 3 dogs by adding SportDOG Add-A-Dog® collars.