Providing high-sensitivity metal detection at a low cost, the Security Wizard III was designed as a user-friendly alternative to more expensive security wands. Featuring a tough injection molded construction and an advanced detection coil and circuitry that provides increased sensitivity and simplicity of use, the Security Wizard III weighs only 17 ounces. The Security Wizard III 's dimensions (3" wide, 19" long, and 1.25" thick) not only enhance its handling, but also give it a recognizable shape. It has an audio alert, a visual LED alert, and a silent vibration alert mode making it ideal for use in loud situations, or locations where quiet is required. A single 9-volt battery provides up to 40 hours of normal operation.