GPS tracker model GF-07 Used for remote tracking and listening. Device Type: Small-sized tracking and monitoring device. How it works: Relies on a SIM card. Tracking: Determines location based on cellular towers (LBS). Ambient Listening: Contains a microphone that picks up nearby sounds. Location Transmission: Upon calling or sending a specific command SMS. Battery: Internal rechargeable battery. Operating Time: Up to 10 days. Size: Very small and easily concealable. Available Services and Functions Know the approximate location of the device. Listen to surrounding sounds. Control via calling. How to Operate (Includes a catalog with usage instructions and tracker app download)