Got out today for a few hours, and found this class ring. Been trying to push the F70 more and more every trip out to max out my depth and try to find that sweet spot where it will run and I can stand its chatter. My setting were as follows: disc 4 sens 69 thres 1 tones 4h, I was very happy with the targets I found, I pulled a 10 inch nickel, and a quarter at around 12 inches out of the moist sand. The ring isn't real, gold or silver, it's something else, I am currently trying to find the owner via Facebook, and hope to return it.