The Streetwise metal detector is designed for use by law-enforcement officers and security personnel to quickly detect even the smallest metal weapons. With its large detection area you can do a fast and thorough scan. The lightweight design and comfortable handle makes it easy to use for long periods of time. Includes a hand strap and carry holster with belt loop. With its adjustable sensitivity this metal detector is ideal for use in airports, schools, prisons, sporting events, nightclubs, etc. This metal detector is powered by either a standard or rechargeable 9 volt battery (battery and recharger not included). The metal detector measures 15 and one-half inches x 3 and one-eight inches at the widest point x 1 inch.