Winbest Pro-200 Metal Detector Water Resistant Coil Adjustable Stem Up to 47 in Black. The Pro 200 allows you to search for different kinds of metals by adjusting the sensitivity and then can discriminate between different metal types. This is done by adjusting the spectral response of the search coil with a dial located on the control box. The 6.7 inch search coil is weather sealed and is capable of detecting in shallow water. Specifications for Winbest Pro-200 Metal Detector Water Resistant Coil: Manufacturer: Winbest Additional Features: Water Resistant Coil Battery Type: 9v Battery Quantity: 1 Features of Winbest Pro-200 Metal Detector Water Resistant Coil: Submergible Search Coil Adjustable Metal Discrimination Adjustable Sensitivity Low Battery Indicator Adjustable Stem (up to 47 inches) Headphone Jack Volume Control Search Modes 2 Audio Tone ID Levels 1 Search Coil Inch 6.5 in Adjustment Length 15.5 in to 25 in Product Weight 1.95 lb Batteries Requires 1 9V Battery (Not Included) Package Contents: Winbest Pro-200 Metal Detector Water Resistant Coil Winbest BE12592: Pro-200 Metal Detector Water Resistant Coil Adjustable Stem Up to 47 in Black