Here is smart tracker that lets you keep a close eye on your dog. The Found LTE Cellular GPS Tracker (LTE-M & POLTE) comes with live tracking and location history on your phone. It lets you set up virtual fencing to get notified when your dog wanders off. There is also a loud buzzer for training.
Found LTE has customizable tracking modes. It comes with an easy collar clip and IPX7 water resistant design. The battery lasts up to 12 months on lower power mode.