hand-held-metal-detectorLose your key in the mess of papers, magazines, and other stuff on your desk again? Are this always happened to you? You may need this “hand-held metal detector” to help you.

We all know that Metal Detectors are routinely used for police searches, airport security, and package inspection. This hand-held metal detector has the similar functionality but the sensitivity of the metal detector circuit is adjustable and allows you to locate items as small as a pin. It take batteries to run.