Professional (1020) Metal Detector with Discrimination Mode Features Sensitivity adjustment helps weed out unwanted signals. LCD console displays probable depth and type of metal. 3-tone audio alert, has headphone jack Max. detection depth is 5-14 ft. depending on terrain. 8.5 ft. waterproof search coil. Padded, adjustable armrest for comfort. Length-adjustable aluminum shaft. Removable battery pack requires two 9V batteries (not included). With a completely waterproof / submersible coil, this Metal Detector can go almost anywhere This metal detector detects all metals and can discriminate between iron-based and gold / silver based objects This Detector emits distinct tones for each type of metal so you dona??t waste time digging up tin cans This Professional Metal Detector Has an LCD Display Which Includes Depth, Volume and Discrimination Type - Metal Detector Color - Black