The smartest smart collar just got even smarter. Introducing the Fi Series 2 with a 400% improvement in antenna signal sensitivity, for more reliable network connection. The Series 2 can now withstand 300 lbs of pull force and directly connects to any Wifi Network - which saves energy and extends battery life…that’s right, even LONGER battery life! Series 2 leverages these new Wifi signals to strengthen our escape detection engine, using all network signals to quickly detect and notify owners of