I've had mine for 6 months. I've always had a problem with the numbers updating. It seems the longer it runs the worse it gets. If I do a master reset on it it's fine for an hour, then it starts slowing down. I have to lift the coil up to get a threshold signal, then the numbers change. If I'm in an area where I get a lot of signals, the display is always 1 signal behind. If I hit a coin I might have just the FE - CO showing and then I hit a pop top and the display shows the numbers for the coin I had hit before. Then I go back to the coin and the numbers for the pop top show up. I think it helps if you don't have fast on and also if you change to the big number display. It's a great detector and I've found a lot of great things with it, but this makes it almost impossible to use. I'm going to send it back when I can part with it for a while. I called tech support (after a couple of e-mails, with no response) and they acted like there is nothing wrong with it. I just don't want to lose it for a month and have them say that there is nothing wrong with it.