I have the newest bellman and flint I find to to be great, no sound out of it it's digital works in feet and meters he'll it even tells you when it needs to be charged, what more could you ask for, as for its accuracy I find it great after all if the dog is six feet down that means a hole six feet square and then what the hell does a couple of inches matter. Then again I've seen lads dig six feet deep and only 3 feet square lazy shower of c***s. The locator isn't the problem it's the men digging the hole......