Make clear recordings with the TIE Mobile Digital Recorder. Because the voice recorder has noise reduction, your recordings are not affected by disturbing ambient sounds. This allows you to record sound in noisy rooms or outside in a busy location. You connect the voice recorder via the 3.5 mm line input with a smartphone or external microphone. This way you can easily register a telephone call or use a tie pin microphone. Is the battery empty? Connect the Mobile Digital Recorder to a computer with the supplied USB cable and charge the battery. In total you record 580 hours of voice recordings on this voice recorder.