Tefifon
AKA
        
    Tefi
    Era
        
    1936–1965
    Format
        
    analog
    Developed by
        
    Tefi
    (Max) Capacity
        
    Small: 18 minutes
Medium: 1 hour
Large: 4 hours
    Size
        
    Small: 4.5 × 8 × 8.5 cm
Medium: 4.5 × 9.6 × 11.2 cm
Large: 4.5 × 13.5 × 15.7 cm
    Fun facts
    - This format used an endless loop plastic band onto which grooves were engraved and played back with a stylus
- Players were available as standalone devices or combined with radios
- This format's sound quality was higher than Gramophone discs, but not Microgroove discs