MInelab Headphone, Koss UR-30Minelab Koss UR 30 Headphones with 1 4"" jack. These high quality headphones provide you with the ability to hear faint, deep treasure with crisp clear sound. Effectively block external noise, such as wind, traffic, other detectors, etc. High quality headphones are available to provide you with the ability to hear faint deep treasure with crisp clear sound. Headphones provide full ear coverage effectively blocking external noise, such as wind,