I have had it for a year now, I mainly use it for my trips abroad where theft insurance does not apply. I consider it very good for its price. Its application is easy to use, the GPS is approximately accurate. One cannot expect perfection with 50€! I mainly use it for vibration notification. Its alarms through the application are reliable. So far, it has not lost anyone no matter how many times I tested it. It starts with the first movement of the car even if it doesn't fall into a pothole. Of course, someone can place it in a spot where the slightest movement before the car starts will trigger the alarm. The sound alarm gives several false notifications as a single honk or noise from an engine can activate it. I use a planet sim card that is renewed once a year if the units are not used up. The panic button requires attention because when pressed, it sends messages consuming units from the card. It is a product that I would buy again. Its size is 2.5 x 2.5 centimeters and its charge lasts at least a week.