I have a two trackers from another company that is more compact, but it uses Lithium batteries and I get a lot of secondary checks because of it. So I got this baby that uses AA batteries. At first seemed very handy, but there are several problems I have with it. (1) Bluetooth never seems to work, (2) I only get an alert usually an hour after landing which at that point I've already got my suitcase (if I don't have my suitcase, I have to wait forever wondering if my suitcase arrived or not), (3) Doesn't seem to have a very accurate battery meter. So it works and all, just not that well. I will probably go back to my other one.