This H.M. Armed Forces metal detector is an awesome adventure kit, which is modeled on the principle of metal detection. This kid-size metal detector has a led powered indicator and large adjustable sensor area making it easier for you to locate your hidden treasures. The telescope extension means the handle adjusts so it can be used at different heights and makes it easy to store. The audio detection is highly sensitive and buzzes to signal it has found metal! You will require 1x 9V battery. Suitable for 5yrs+.