I finally seen and felt one of them up here. He cranked it up in all metal he was finding my Yamaha trail way 200 at a bought four feet with a repeatable beep both ways...My mxt would only beep one way on my bike he had a ten inch coil. mine stock 950 eclipse..he said it like hot rocks dug a few. his last detector white's 5900 di pro. hay the guy knows quality after all.. I'm not going to tell how far my 5900 di pro with 1500 maximum did. you will have to get one your self and see.