The Omega 602 is a manual wind mechanical watch movement that was used during the period of 1975-1977. It features a balance with 3 spokes instead of the usual 2, and a larger plate recess for the lever cock. There are two options available for the date disc: bevelled and plane. Components from both old and new versions of the movement can be interchangeably mixed during the transition period, resulting in occasional discrepancies in signatures. The movement includes the functions of sweep seconds, and a date that can be set by changing the time between 23-24 hours.