Train and track your sporting dogs with the TT15 Dog Device by Garmin! It comes equipped with a top-mounted, high-sensitivity GPS/GLONASS receiver that provides your dog’s exact location within a 4-mile radius to a compatible handheld device. In addition to its tracking capabilities, the TT15 features 18 levels of continuous or momentary stimulation, as well as audible tone and vibration. The TT15 also features remotely operated LED beacon lights to help locate your dog in low light conditions.