I also own the Sorex Pro. Are you getting the Sorex 7281 model, or the Sorex Pro? There is about a $200.00 difference between the top model, (the Pro) I think and the 7281. Be aware that AKA, the Manufacturer, has not updated their manual (At least for my pro, they have not!) And you may find that what they say in the manual, is not what you have on your Detector? They are constantly updating the Pro and since they sell so few in the U.S., they have not bothered to update the English manual for the newest Pro?
This is what I have been told, but I will be soon contacting the Seller, that sold me mine and asking him to clarify (I don't speak Russian, or I would contact AKA myself!) a number of issues I am having with the operation (Not flaws or hardware problems, just Operator Manual differences!) and hopefully, he can contact them and give me the current "change list", which I will post here, when received and reviewed. I agree with Gimpydigger above, so far, a great detector and having much fun with it, except the not updated operators manual. Welcome to the Sorex part of the Forum! Big Red