The Mido 1147OCD watch movement, produced by Bifora in 1971, is a detached manual wind movement that features automatic winding, sweep seconds, a day function (set by changing 19-24 hours), and a quickset date function achieved by repeatedly pushing the crown. This last mechanical calibre family from Bifora often or always bears the signature "1160." This movement was in use exclusively during the period of 1971-1971.