LINK AKC SMART DOG COLLAR: The only GPS and activity tracker you will ever need to keep your dog safe, healthy, and happy. Works with iOS and Android. Have questions or need support call 866-772-6055 * Only works in the U.S.A. SERVICE PLAN: Link AKC is like a smart phone for your dog & requires service plan connectivity to allow data to be transmitted. Includes an extended warranty, a size guarantee, and access to the Pet Poison Helpline, a 24/7 animal poison control center SIZE GUARANTEE: Don’t stress about which size to order, LINK AKC will exchange your collar for free just call Customer Service at 866-772-6055 *Not recommended for dogs under 10 lbs. LOCATION TRACKING NATIONWIDE IN UNITED STATES: Know your dog’s location with fast and accurate GPS tracking enabled by the AT&T cellular network (Service plan required). Be alerted if your dog leaves designated safe zones ACTIVITY MONITORING AND SOUND TRAINING: Activity goals are customized by AKC to your dog’s age, breed, and size to allow for accurate daily activity monitoring. Remote turn-on sound to help with training. Shock resistant ADVENTURES FEATURE: Record, remember, and share special walks, hikes, and other adventures with your dog SAFTEY FEATURES: TEMPERATURE ALERTS if your dog’s environment is too hot or cold. LED LIGHT on collar with remote turn-on LED light to see and be seen. VET RECORDS can be stored in app to make dog ownership easier with a place to store important records WATERPROOF and FASHIONABLE: We have you covered for up to 30 minutes in 3ft of water in our lightweight collar that is curved to naturally fit the contours of your dogs neck.