Omega Geneve Chronostop Driver, burgundy dial w/ calendar, calibre 920 circa 1968, 17 jewels 21.600 bph, handwound, irreguler model 12 o'clock on 3 o'clock position so if it use under the wirst more efficient while we drive a car, furnished with genuine vintage omega buckle, chronostop reset at 12 o'clock as it should