DC-International
AKA
        
    (None)
    Era
        
    1965–1967
    Format
        
    analog
    Developed by
        
    Grundig
    (Max) Capacity
        
    DC-60: 30 minutes (per side)
DC-90: 45 minutes (per side)
DC-120: 60 minutes (per side)
    Size
        
    12 × 7.7 × 1.2 cm
    Fun facts
    - After just two years, this format was discontinued in favor of the Compact Cassette
- DC is short for double cassette because it was a two-reel cassette
- This format could enable write protection by putting an insert into a recess in the base of the cassette