SQUELCH-TECH® FULLY AUTOMATIC GROUND BALANCE ELIMINATES FALSE SIGNALS; PUSH BUTTON DISCRIMINATION & 1-TOUCH DEPTH CONTROL; 4-SEGMENT DIGITAL TARGET IDENTIFICATION & 3-TONE AUDIO FEEDBACK FOR ACCURATE IDENTIFICATION OF BURIED OBJECTS; 8" INTERCHANGEABLE WATERPROOF COIL; EASY-VIEW LCD DISPLAY IS READABLE AT VARYING DISTANCES; FULLY AUTOMATIC GROUND BALANCE; HEADPHONE JACK; REQUIRES TWO 9V BATTERIES