Advanced GPS tracking and training collar designed for hunting and working dogs. Features up to 9 miles of tracking range, GPS/Galileo positioning, 18 levels of stimulation, tone and vibration training, dynamic tracking updates as fast as 2.5 seconds, multi-color LED beacon lights, and a rugged, water-resistant design. Compatible with Garmin Alpha handheld devices (sold separately). Ideal for tracking and training dogs in demanding outdoor environments