Black shell design for discreet concealment with two powerful magnets inside, allowing secure attachment to a vehicle or metal surface with no extra installation required. Realtime tracking over the Internet via Google Maps, using a working SIM card (not included). Confirm support for 2G/3G network before use. Easy setup: insert a working SIM card (not included), then you can track and map in real time. Silent audio monitoring: dial the SIM card number to listen to the area around the tracker with no light and no noise, enabling covert monitoring. Comprehensive feature set: separate recording, voiceactivated callback, GPRS positioning query, product surrounding sound query, positioning track query. For full operation details, please refer to the description text below the link; the manual may be unclear. Use scenarios: Vehicle fleet management and asset protection in a business setting, enabling realtime location tracking and status checks. safety for teens or elderly family members, with appropriate consent and compliance. Protection and tracking of value assets or equipment to prevent loss or theft. Important notes: Requires a working SIM card (not included). No installation is required beyond inserting the SIM card and mounting with the magnets. For all operations, refer to the description text below the link; the manual may be unclear.