1. Ankle bracelet: This tracker is a GPS tracker for ankle wear, which is convenient for users to wear and locate for safe tracking. 2. Widely applicable: This ankle bracelet is suitable for prisoners, mentally ill patients, dementia and Alzheimer's patients, etc. It can track the identity and track of these people to ensure their safety and social responsibility. 3. GPS tracker: The device is equipped with high-precision GPS positioning technology, which can realize accurate positioning and tracking functions, and can ensure positioning accuracy even in places with poor signal coverage such as indoors or underground parking lots. 4. Portable charger: The ankle bracelet tracker comes with a portable charger, which supports repeated use, making charging more convenient and smoother when users go out. 5. Safety tracking: The ankle GPS tracker can track the user in real time around the clock, and can also set up a regional security fence, and cooperate with the mobile APP to realize real-time information transmission, which is convenient for relevant management departments to monitor and track the whereabouts of the tracked person in real time to ensure its safety and social responsibility. The tracker has a wide range of applications, and has the characteristics of high-precision GPS positioning technology and portable chargers. It plays an important role in ensuring the identity security and social responsibility of the supervised personnel, and helps the management department to effectively implement safety management and supervision.