The 27.01 was the first extra-thin watch from Ming, at just 38x6.9mm. The
link ETA/Peseaux 7001 caliber was used as a base, but the movement was modified by Ming's
link movement partner, Schwartz-Etienne,
link almost out of recognition. The only parts from the original movement retained for the Ming 7001 MI were the going train and regulating components. After modification, the movement gives an impression of transparency usually associated exclusively with openworked calibers.