Hi The device was purchased from a legitimate seller and when the piece is placed in a hole, its depth does not exceed 5 cm on the all-metal system, either the insulation system picks up the device at a depth of approximately 15 cm, while the stat system captures the large pieces at a depth of 1.5 meters I work on the device by searching for the old currency Attached are pictures of the coin, which is Phoenician and an American piece of silver A picture of the device My work as a device on Discrim Sensitivity 99 and insulation 15 NOTCH 1 Thank you