Bag and sifter allow for great ease-of-use, Features 3 distinctive alerts for different type of metal, Ferrous/non-ferrous discriminator distinguishes iron/steel from silver/gold, 1-touch auto-tune and very low frequency design for accurate detection, Ground control tunes out false signals in areas with profuse minerals, View meter and pointer with ferrous and non-ferrous indicator lights, Front mounted , 125"" headphone jack, Requires two 9V batteries, SKU: PEFTSMD1023