The LINK smart collar is a sophisticated GPS smart collar designed for dog comfort, fit and fashion. It lets you track a lost dog with GPS, WiFi, bluetooth, & cellular monitor activity, log vet records, receive ambient temperature alerts, and much more. Smart collar pairs with LINK AKC app. The smart collar helps you take a more informed and active role in managing your dog's well-being and to feel connected to your dog when you're apart from each other. State of the art tracking unit, collar carrier and a sleekly-designed LINK AKC base station and charging cord. The base station is used to charge the tracking unit and also features a USB port to make it convenient to charge both your dog's tracking unit as well as your cell phone simultaneously. LINK AKC service plan ($6.95 a month) is required in order to activate the tracking unit and have full feature functionality of the LINK AKC app (available for download on iOS and Android).