Features:  Wide applications: This metal detector can be used in the backyard, at shoreline, in the mountains or fields afar to find treasures, let you enjoy the fun of treasure hunting.  With 11 inch waterproof search coil for cover the maximum amount of ground efficiently and for the deepest ground penetration.  Intelligent identification of gold, silver, copper and iron,Different metal display with different values and different sounds.  Discrimination mode: When the detector emits different tones for different types of metals,and when the detector"eliminates" certain metals,we refer to this as the detector"discriminating" among different types of metals. Discrimination is an essential feature of professional metal detectors. Discrimination allows the user to ignore rubbish and other undesirable objects.  Pinpointing mode: Pinpointing is the process of finding the exact location of a buried object. long-buried metals can appear to the eye exactly like the surrounding soil, and can therefore be very hard to isolate from the soil.  Ground Balancing is the ability of the detector to ignore, or "see through" the earth's naturally occurring minerals, and only sound a tone when a metal object Is detected. The TC-600 incorporates proprietary circuitry and programming to eliminate false signals from severe ground conditions.  All metal mode: The all metal mode is more sensitive than the discrimination mode, and is used to find all types of metal objects in the ground. The search coil need be in motion for objects to be detected.    Specifications:  Material: ABS  Color: black  Backlight: yes  Battery: 1 * 9V battery(NOT included)  Height adjustment ranges: 500mm~1200mm / 20.0~47.2in  Ground balancing: 0~99.9 (in all metal mode& 65289;  Gain: 1~100 adjustable (in all metal mode& 65289;  Package size: 545 * 245 * 100mm / 21.5 * 9.6 * 3.9in  Package weight: 1700g / 3.7lb    Packing list:  1 * Host  1 * Search Coil  1 * Armrest  3 * Connecting Rod