High Sensitivity: High sensitivity for improved detection of small targets, it can work indoors, outdoors, on sand, lawn or in soil, locate coin, silver, jewelry and gold with speed and accuracy. 360 side-scan and pinpoint tip for precise locating. Alarm Reminder: It features audible and vibrating alarms to indicate the presence of metal objects. The alarms increase in intensity as the detector is moved closer to the metal target. Microprocessor circuitry ensures maximum sensitivity and requiresno adjustments or fine tuning. Easy Operate: Simple push button controls with easy touch and operation. Ergonomic Grip: The ergonomic design of this wall stud finder makes it comfortable to hold from any angle. Three Sensitivity Levels: There are three sensitivity levels with different flashlights(3 LED lights), ratio audio and vibrate alert to the different distance between the sensor and objects. The closer they are, the louder it sounds and the green LEDlights to flash one after the other. Avoid lots of unnecessary digging.