SONY 7-inch open reel tape for recording. The tape type is unknown, but it is low-noise and a 45-minute tape (one way). Music was recorded on it at 4-track, 19 cm/s. Tape transport and music playback are not a problem. However, I haven't tested recording yet because I don't have a recording environment set up at the moment. It's old, so I can't say for sure about the current tape quality. The box doesn't match the tape. Please consider this information before purchasing. Thank you.