This handy all-round metal detector can locate metal objects on the beach, in the garden, in shallow water, in walls, ceilings, or the ground. Equipped with a waterproof search coil, the metal detector has an adjustable length of up to 1 meter, making it ideal for various applications. It can detect coin-sized objects buried up to 12 cm deep and larger objects up to 60 cm deep. The built-in speaker provides quick audible alerts as soon as something is detected. The headphone jack and adjustable volume offer greater privacy and help you hear the sound clearly while treasure hunting. The metal detector is powered by 6 AA batteries (not included). Note: The use of a metal detector may require a permit, license, or authorization. The location where a metal detector can be used may also be restricted. Familiarize yourself with all local, state, and national laws regarding metal detecting. Please comply with these legal regulations.<br/> Size: 100 x 16 cm (L x W) Waterproof search coil: 17 cm (?) Headphone jack: 3.5 mm Color: Black Adjustable volume Power supply: 6 x AA batteries (not included) Detection depth: Coin-sized objects up to 12 cm deep, larger objects up to 60 cm deep