Instead of a chargeable built-in battery, it employs four AAs, so you may want to get some rechargeable variations of These. You should use it with headphones, but only wired ones. Ultimo consiglio da dare è tener presente che anche l’attrezzatura del cruscotto influenza il costo di un metal detector: https://codytcira.p2blogs.com/29721264/the-smart-trick-of-metaldetector-ricerca-oro-that-nobody-is-discussing