The lightweight DT 1 single-sided earphones can be used with a tour guide or interpretation system and other mobile devices (cable length 0.9 m). The neodymium magnet system used for the earphone ensures excellent sound properties and intelligibility of speech. The ergonomic earphone with elastic ear piece is suitable for different ear sizes. As the cable runs in the middle, the earphone can be worn on the left or right ear. After each use the earphone can be easily cleaned to be hygienically ready for the next use.