Headhunter12Underwatermetaldetectorsubacqueowith electronicson the headsetwith plate12"DD The threecontrol knobsare locatedon the roofof the headphones,the electronicsis locatedinside thewaterproof headphones. Metal detectorswater resistant to 30meters(100feet),sturdy, simple,yet powerful. Suitablefor researchon landin general,dry sand,wetandin water(fresh and salt)