Easy way to locate small nails down to 6in., large nails down to 8in., marker stakes down to 7, cast iron pipe and manhole covers down to 8 and large iron tanks down to 15. LCD display has digital and bar graph plus audio signal. Easy grip handle. Waterproof up to housing. On/Off, volume and sensitivity controls. Magnetic toroidal sensors and patented electronic balancing circuitry. Low battery voltage indicator. Requires 6 AA batteries. Soft padded case. U.S.A. Locates: Small nails, steel well casings, iron pipes and valves, Depth (in.): 42, Battery Type: 6 - AA, Case Included: Yes Ideal for finding steel well casings, iron pipes and valves, re-bar, corner markers, septic tank handles and more!