The Paw some Tracker: Waterproof Hunting Dog GPS Collar is designed for dogs and made with durable plastic from Mainland China. It features a built-in, rechargeable Li-Ion battery and a durable silicone band. With dimensions of 6.5 x 3.5 x 3.5 cm, it operates on 850/900/1800/1900MHz frequencies and has a GPS sensitivity of -165dBm and an accuracy of 2.5m.