ALLOSUN Junior Metal Detector Beach Yard Junior Ground Metal Detector High Sensitive Treasure Hunter Gold Digger Color Random Lifeful color. Versatile and easy to hunt for coins, relics, jewelry, gold and silver. PLEASE NOTE: The measurement range is about 5cm in the air for a 5 cent coin. New Version equipped 1 piece Electronic Torch, letting the detection in lightless environment without any obstacle. Power supplied by 1 piece of 9V, 6F22 battery or equivalent.(Battery not provided by seller) Allows you to connect earphone to the detector so you can listen to it in private. The depth, the amount of iron and the size will decide the range of the application. The angle at which the object rests in the ground will influence the detection. The equipment will beep for the metal all around the house. It is normal . At this time, you can tune the ON/OFF sensitivity knob. Please tune it between sound and no sound (this is the most sensitive). It means the TS20 has been turned on but you can&#039;t hear a beep sound . At this moment, the TS 20 is most sensitive. (In other words, slowly turn SENSITIVITY KNOB clockwise until this instrument gives alarm signal, then turn the knob back until the alarm signal just stops.Now the sensitivity is maximum.) The measurement range is about 6cm in the air for a 5 cent coin. The detecting range depends on the size of metal, the metal purity, soid quality and the operation of machine. We can&#039;t give you a exact answer. lifeful Color[ <span class="a-text-bold">COLOR RANDOM</span> ] Electronic Torch Equipped