I ordered the tracker in order to secure my aircraft. If I get lost sometimes the thing, I want to at least have a chance to see that thing again. The device ran with the help of German instruction (see below) without any problems. That's the only reason I unplug a star. The English manual is written very incomprehensible. Even though my English is very good, I would not have come so quickly to the goal. The first test is very encouraging. The coordinates are exact meter (!) Picked up and sent on's mobile phone. Since the tracker a Google Maps link mitschickt you can leave at once in the app or on the website, where the tracker is. Ingenious part. What I could equip so as yet :)