Garmin T5 GPS Dog Collar High-Sensitivity GPS with GLONASS;Range: 9 miles LED beacon lights and Rescue mode. Neck size: Minimum of 9.5 Inch (24 cm) in circumference Battery life 20-40 hrs. Water rating: 1 ATM (10 meters) T 5 tracking dog device w/ rechargeable Li-ion battery, 1" blue collar strap, 18 1/2 " standard & 22 1/2 " extended range antennas, charge clip,