This is a *GSM / GPS Vehicle Tracker*
It's a very common anti-theft tracker used in all cars
What it does:
*1. Real-time tracking*
You put a SIM card inside it. It uses GPS to find the car location and GSM to send the location to your phone. You can track the car live on Google Maps via SMS or an App like "GPS303" / "Tracksolid".
*2. Anti-theft / Anti-robbery*
On the box you can see "Anti-theft of the vehicle" - if someone steals the car you can see where it is.
*3. Engine Cut / Engine Stop*
It has wires for remote cut-off. You can send an SMS like `stop123456` and it will cut fuel power so the car can't start.