The Vintage Compass Judge 5 Metal Detector is a ground search detector with a variety of features including volume control, battery test, and a discrimination knob. Designed for general purpose use, this metal detector, made by the brand Compass, is a reliable tool for detecting various types of metals. The Judge Model 6 offers precision and accuracy in detecting underground objects, making it a valuable tool for various applications. Included instructions ensure users can effectively utilize the detector to find hidden treasures or conduct inspections with ease. Inserted 8 batteries turns on with sound volume adjusts . Battery tester works. Put a Quarter on the ground and it beeped when I waved over the coin. Comes with instructions. Please see pictures. Thank You!