2 Operation Modes: The professional metal detector features 2 modes: all-metal mode and discrimination mode. All metal mode lets you search for all different types of metal with auto ground balance and high sensitivity; DISC mode can discriminate what kind of metal is being detected.High Accuracy & Waterproof Search Coil: The outdoor metal detector is equipped with a high sensitivity search coil of 16cm diameter, which allows you to accurately find the metal. Moreover, the waterproof search coil is suitable for underwater detection at depths of up to 12cm.Adjustable Stem: This waterproof metal detector kit characterizes an ergonomic stem, which can be adjusted from 78cm to 107cm to fit for adults and kids. What’s more, the arm support makes you use.