Features: 1. Sharp and easy setup: Through creative design and innovative engineering Smart GPS collar now replaces your old collars. 2. Real-time tracking: GPS outdoor tracking and Bluetooth low energy Wi-Fi indoor tracking. 3. Small, light, waterproof: Small weight and size just 2.6 ounces, follow the IPX7 waterproof standard. 4. Smart geofencing: Define a safe zone in the mobile app or Web browser and you are ready to receive an alert when your pet gets out. 5. History of location: View 24 hours of location history in the app any time.