Before revision: Design Sony NT-2 Digital Micro Recorder NT cassette compared to various memory cards The system was an R-DAT based system which stored memos using helical scan on special microcassettes, which were with a tape width of 2.5 mm, with a recording capacity of up to 120 minutes similar to Digital Audio Tape.
After revision: Design NT cassette compared to various memory cards The system was an R-DAT based system which stored memos using helical scan on special microcassettes, which were with a tape width of 2.5 mm, with a recording capacity of up to 120 minutes similar to Digital Audio Tape.