Almost all metal detector machines are Male! They exagerate about how deep they can go! After about 14-16 hours with the 800, the meter seems to be about one bar indicator too much. 4 bars I think is supposed to be 8", and that appears to be about 5-6" really. 2 bars is usually in the 3 to 5 inches range. The pin point tone gives a better indicator of depth and then that is also just a guess. It isn't accurate to the mm but it is a good indicator! Like everything else on a machine, it is just another 'somewhat accurate' piece of information used to make a 'dig' decision.
So far, I am very impressed with the overall capabilities of the machine. The weight, fast reaction times, build quality, fairly easy functions and operating process, and the incredible Gold modes! If you have one, hunting in Park 1 or 2, and get a decent deep target/tone, switch to Gold 1 or 2, scan the same target and see what happens!!