A top-mounted, high-sensitivity gps/glonass receiver, t 5 mini dog device uses led beacon lights activated from its compatible handheld device.The lights work in low-light conditions and at night, and are visible up to 100 yards away.Rugged and water-resistant to 10 meters, the tracking-only dog device with collar is tough enough to run wherever your dog runs, up to 4 miles away.T 5 mini ships with a 3/4-inch blue collar strap.It also comes with 18.5" standard antenna, charging cable, ac adapter, and vehicle power cable.Function: Dog TrackerRange: 4 MilesBattery: Rechargeable Li-ionProofs: Water ResistantColor: Blue