NT was a digital memo recording system introduced by Sony in 1992, sometimes marketed under the name Scoopman. The system stored memos using helical scanning on special microcassettes, which were 30 × 21.5 × 5 mm with a tape width of 2.5 mm, with a recording capacity of up to 120 minutes. The Scoopmen media comes in three forms: The Sony NTC-60, with 60 minutes of recording time, the Sony NTC-90 with 90 minutes of recording time, and the Sony NTC-120 with two hours of recording time.