NESTTER Pets GPS Tracker on Collar, Smart Pet Tracking with GPS, Wi-Fi and Cellular , Locate Dog Safe Fence Smart LED Lights with App for iPhone & Android Meet Nestter GPS Pet Tracker. The best all-in-one GPS location and activity tracker for dogs. Smarter pet care is here. Proactive Alerts: Receive notifications via app and text alerts when your pet leaves their safe place using Wi-Fi before they get too far away. LIVE Tracking and Historical Routine Feature. GPS, Cellular and Wi-Fi technology positioning mode. 0-50 Feet positioning accuracy. Review the ever routine of your pets. Virtual Fence Alerts and low battery alarm will appear on the free apps Search Pets Quickly. The GPS notifies you if your pet is away from their safe zone, a customizable safe area you designate for your home or office, and allows you to pinpoint and track their location directly from your smart phone (iPhone, Android). Smart LED light will automatically turns on when in dark environment Nationwide Coverage: Nestter uses advanced GPS and cellular technology to pinpoint your pet's location anywhere in the U.S. on America's largest network. Service plan (as low as $7.495/mo to be selected at activation) required. Only available in the U.S. First 30 days Free. Upon receiving the device, the Nestter Pet GPS tracker requires activation to work. Free for First month (30 days) after activate your tracker. If you have any questions for the devices, Please visit the Nestter official website, look "FAQs" or contact customer service.