The International Durowe 611 watch movement was produced between 1983 and 1986, with a total of 466 units manufactured. It is based on the calibre 711 and features manually engraved movement parts. This mechanical movement offers a range of functions including automatic winding, a sweep second hand, day and date display, month indication, and a moon-phase display that can be set using a pusher. The movement also incorporates Incabloc shock protection for enhanced durability.