Uzi Hand Held Metal Detector Wand HHSC216 1 4" overall. Black rubberized sure grip handle. Highly sensitive will detect handguns, knives and other metal objects and set off alarm. Simple and convenient to use, no adjustment is required. Low power consumption, can work for 40 hours continuously. Automatic low battery alarm. Ideal for security inspections. External rechargeable socket hole. Uses one 9V rechargeable battery (included).