REAL-TIME TRACKING,NO MONTHLY FEE:Petfon GPS tracker combines GPS, WiFi, bluetooth, and long distance wireless technologies for accurate real-time positioning. The small, durable, and rainproof device allows you to track your pet's activity and pinpoint his/her location in real time. Petfon GPS tracker is free of any service fee or monthly fee.The feature,WiFi assisted location uses Google big data interface, it might cause an inaccurate positioning due to the delayed update of Google WiFi hot
