This is the same type of metal detector that is used by security guards at hospitals, courthouses, public concerts, and many other crowd control situations. This detector sounds an alarm when passing over a metal object. You can also turn off the alarm function, and it will vibrate instead. It operates on one 9 Volt battery (not included)

* This Metal Detector Is 13-3/4 Inches Long, With A 5 1/2 Inch "halo" Type Detector

* Comes With A Wrist Strap So You Won't Accidentally Drop It

* Effective For Detecting Metal Objects In Pockets Or Hidden In Someone's Clothing

* A Great Safeguard Against Any Type Of Metal Weapon Being Smuggled Into A Public Event

* A Valuable Asset To Any Organization Concerned About Personal Safety