MII
AKA
        
    M2
    Era
        
    1986–1990s
    Analog/digital
        
    analog
    Format
        
    Cassette
    Developed by
        
    Panasonic
    (Max) Capacity
        
    Small: 20 minutes
Standard: 90 minutes
    Size
        
Small: 13 × 8.7 × 2.5 cm
Standard: 18.7 × 10.6 × 2.5 cm 
    Fun facts
- This format was an enhanced version of its predecessor, the failed M format; while the cassettes were similar, they used different magnetic tape formulas and signal processing methods
- This format was developed to compete with Sony's Betacam SP format; while it gained some popularity, it largely lost out due to lack of reliable, affordable repair support
- The M and MII formats, like the U in U-matic and the B in Beta, were named after the M-shape of the tape threading through a playback device (and VHS used this same technique)