====== Buren 1281 ====== Calibre by [[Buren]] [[Self-winding]] movement with [[microrotor]], with [[date]] indication, from the movement family [[Buren 1280]]. Was used as starting basis of the automatic [[chronograph]] calibre [[Chronomatic]], a community development by [[Hamilton]]-[[Buren]]/[[Breitling]]/[[Heuer]]. **Description:** * [[Self-winding]] * [[Yoke winding system]] * [[Microrotor]], ball-bearing, bi-directional winding * [[Incabloc]] [[shock protection]] **Functions:** * Hours, minutes * [[Date]] **Data:** * 12½ [[ligne]]s * Ø 28,15 mm, H 3,25 mm * 17/21/30 [[jewels]] * 19.800 A/h * [[Power reserve]] 54 h **Production period:** * From [[1962]] ===== Weblinks ===== * [[http://www.timezone.com/library/archives/archives631988314105468750|An Artifact of Innovation: The Hamilton/Buren Intramatic]], timezone.com {{tag>Movements Automatic_movements Micro-rotor_movements Buren_calibres}}