The MOST IMPORTANT item after your detector! Makes the difference between those who find "surface" coins and those with Quality phones who recover the deeper more valuable coins, rings, jewelry, etc. Many treasures are older and deeper giving off a weak signal when detected due to depth and size. Add the sound of surf on a beach, traffic and wind rustling through the trees, and a dozen other sounds that easily prevent you from hearing that low signal, you pass right over these targets. What separates those who consistently find more older silver coins and even gold coins, in our opinion, are those using headphones, and not just any headphones but phones that are proven to get the deeper targets!