25 1/2" scale, 21 medium jumbo frets, 9.5 radius…the Mustang’s and Duo Sonics are short scale.
Plus it has the unique “trem-loc” feature – a feature I didn’t even know about. If a string breaks, normally the missing pull of that string forces tremolo systems out of tune, usually the whole tuning goes sharp. That is because the balance between the tremolo’s spring and the pull of the strings has shifted – the spring is now stronger in comparison to the pull and forces the strings to go sharp.
Fender designed the Jag and JM tremolo so that with a simple slide of a knob, the “right” tuning is restored – the tremolo works downward only when the lock is engaged.