There have been many great stories of people discovering ancient & valuable treasures using a metal detector. If you have thought about metal detecting & want to have a go yourself, our Metal Detector gives you everything you need to get started in this potentially lucrative hobby! Seek out gold, silver, copper, aluminium, platinum, brass & more! The metal detector has an adjustable sensitivity control & an earphone jack for plugging your own headphones into. The adjustable stem also means that you can alter the length of the metal detector to suit your requirements. 15.4cm (6) diameter search coil Maximum detecting depth 20cm Complete with earphones Requires 1x PP3 battery (not included). Note: This is not a toy