Real-Time GPS Dog Collar: The GPS tracker works with GPS, WiFi, AGPS, LBS and long-range wireless technology. Animals wearing trackers can be tracked and traced precisely. Location updated by sending SMS and displayed on the application and Internet Navigation accuracy within a radius of 10 meters Always know the exact location of your pet with precise GPS! Easy to UseThe GPS tracker is easy to install and use. Simply download the free app and follow the instructions. Through the application you can view your pet's activities and locate its location at any time. With remote voice monitoring, you can call them at home, reassure them while you're away, and hear their responses. Note: There is a protective film on the product screen, which can be removed before use. Waterproof and Mini Size With waterproof design, the pet tracker can work even on rainy days. The tracker is made of ABS material, which makes the device durable and environmentally friendly, and the tracker is small and lightweight, making it suitable for any type of pet. Built-in large capacity battery, rechargeable via USB, a full charge takes about 2-3 hours. Customizable geofence zones The security fence system lets you know if your pet is in a safe area. You can create a safe zone where you feel the animal is safe and protected. Use the app to map safe zones around your favorite yard or park and receive instant alerts when your dog exceeds these limits. [Supports multi-person monitoring] Supports multiple mobile phones to remotely monitor GPS locators at the same time, or one mobile phone to manage multiple devices. Record your pet's location for up to 3 months and view its travel route. And the neck circumference can be adjusted. SIM card not included, please prepare a suitable SIM card to insert into the pet tracker. Note: The data is all manually measured, please allow 1-3cm error due to differences Due to light and display, there may be some color differences, please refer to the actual item received.