thats cool guys,,,but in the ground you knoe ,,everything changesmmmbut,,if its deeper in air and has a ground balance ,,its probably deeper in the ground ,,,,i have used a Nautilus dmc 11 ba for a year or so ,,,and although i am buying a machine to use in the salt wet ,,(not a minelab,,,they just find shallow stuff in wet sand in my opinion ) i have in 35 years Never used a machine that goes as deep, or picks out tiny targets in deep pasture or dry sand ,,as the NAUTILUS,,, just blows your mind ,,,p.s its not made of plastic ,,.am not on aspirin,,,if you know someone who has one ,,go on ,,,annoy yourself,,