1. Small size, light weight and easy to carry. 2. Black case, easy to hide, perfect for tracking vehicles, teenagers, spouses, elderly or assets. With two powerful magnets inside, it is easy to attach to the vehicle without additional installation. 3. You just need to insert a valid SIM card (not included) into the device, then you can track and map in real time (using Google Maps) over the internet. 4. Dial the SIM card number, you can hear the sound around the tracker, no lights, no noise, you can silently and secretly monitor and spy on the situation around the tracker. Function Recording: Send the number 555 to the alarm phone to start recording. Sound monitoring: send 666 GPS track to the alarm mobile phone: send 777 to the alarm mobile phone, and the mobile phone receives the geographic location and map link. Locate Track: Send the number 102 to the alarm phone. Delete memory card contents: send number 445 to the alarm phone. Restart the mobile phone: send the number 999 to the alarm mobile phone, and it will start successfully after 1 minute. Reset Phone: Send number 444 to the alarm phone. The product must have a 2G network area to use.