The Fi Series 3 smart GPS dog collar offers live GPS tracking, escape alerts, health insights, and a durable design.It provides precise, always-on GPS tracking with nationwide coverage, ensuring your dog is always within reach.Lost Dog Mode activates when your dog leaves a designated area, sending instant notifications to keep them safe.The collar is made with a sleek stainless steel profile, 400-lb tug resistance, and IP68/IP66K waterproof rating for durability.