If you're thinking of getting one to track your son's or daughter's movements. Don't bother. It doesn't work. You have to charge it by a window. . My sons's lost the signal while charging and never got it back. I had it out with me while I went to work. I sit by a window. No signal. I guess the cell signal is so weak there is no connection. No cell signal and no GPS. I've talked to the owner and will get another SIM card shortly. I'll keep you posted. At this point a waste of money.