My buddy I grew up with was mowing a customers yard when he lost his wedding ring. He did not want his wife to find out. He called me and asked me if I would look for it. I went out to the yard and within 10 minutes found it. I had the EQ800 on 40 khz and he was very happy. His wife never found out. He wanted to pay me for the time but I told him he saved me from at least on or more High School beatings. LOL