The latest version of our smart collar. Chew-proof, water-proof, and generally dog-proof. Bluetooth and Wi-Fi enabled to track your walks and activity, and keep your dog in good shape. Charging accessories included. If you and your dog frequently go hiking or camping together, we highly recommend the Fi Smart Dog Collar. This collar keeps track of your dog’s daily activity levels and sleep patterns, and it also doubles as a GPS tracker if your dog ever gets lost. When we tested this smart collar, we loved that it has a sleek, stylish design, and its battery also lasts much longer than other smart collars, only needing to be charged once every few months.