3/4" U-matic
AKA
        
    3/4", three-quarter 
    Era
        
    1971–1990s
    Analog/digital
        
    analog
    Format
        
    Cassette
    Developed by
        
    Sony
    (Max) Capacity
        
    Small: 20 minutes
Standard: 60 minutes
    Size
        
Small (S): 18.4 × 12.2 × 3.2 cm
Standard (SP): 22.1 × 14.0 × 3.2 cm
    Fun facts
- This format was named after the letter U, because the course of the tape running through a playback device is shaped like the letter U
- While this format was primarily used to store analog video, it was also used for the storage of digital audio data
- All tapes have a round red button on the back that can be removed to prevent accidental recording
- The first format in a cassette.
- Many early U-matics do not say U-matic on them.