kuman Hand Held Metal Detector, Portable Light-weight Security Scanner Wand with Adjustable Sensitivity Metal Detectors KW32 (Hand Held Metal Detector) ADJUSTABLE SENSITIVITY: The sensitivity can be adjusted for your need (the detailed adjust steps are as the description ). the screwdriver is for the gift to you. PROTABLE and FAST DETECTING: The metal detector digging tool is Light-weight with a portable wrist strap. Detecting temperature range is -15 ~ 45, high sensitivity. TWO ALTERNATIVE ALERT WAYS: the metal detector is with a power switch between audible tone or vibration. THREE-COLOR INDICATOR: green for power, yellow for under-voltage, red for alert. WIDELY USED: Perfect for safety check and the detection of prohibited goods, electronic products, metal etc in station, frontier defense, school, court, venue, factory and so on.