Blancpain

European Watch Clock and Jewellery Fair 1992 BF 248
A world first from Blancpain : the first ultra-slim chronograph with flyback hand and perpetual date calendar. Fitting ’+80 separate parts in such limited space is an impressive feat made possible by combining advanced computer technology and the finest traditions of mechanical watchmaking. (BLANCPAIN)
Movement : 12 lines, Ø 27 mm, 6.95 mm thick, 21,600 v.p.h., handwound,
power reserve : 48 hrs.
Chronograph : Column-wheel design including for the flyback hand, three
totalizers : seconds, 30-minute and 12-hour.
Calendar : Perpetual design showing the date, day and month, leap years and moon phases.