1. High Sensitivity Metal Detector Adjustable Sensitivity, sensitivity can be adjusted through the left hand knob to detect different metals, 3 10ft Detection Depth. You could detect metals including iron, aluminum, gold, bronze, silver and their articles with this detector in all metal mode. Also you can FILTER the metal you want, just press the relevant button. 2. Search Coil Constructed with search coil for extreme ground conditions and shallow water detection except for the control panel. Just enjoy exploring in the water. With a big enough search coil, the sensitive performance is more remarkable. DISC/NOTCH CONTROL could distinguish between target and unwanted metals. 3. Smart Displayed The Control Panel with LCD will make your detecting more convenient. You can know the info such as depth, discrimination, operating mode, sensitivity level and battery level with this smart control. 4. Metal Detector With Voice Reminder Provided 7 headphone jack. Stereo or mono headphones can be used. Unique tone for the target you don't have to keep watching the LCD display when an object is detected. A unique hue is detected that corresponds to the target. All we have done is let you find the target more easily and share your joy.