Seiko 7625A Sportsmatic Calendar Movement - Parts List
Technical parts list and service documentation for the Seiko caliber 7625A automatic wristwatch movement. This 17-jewel mechanism features a calendar complication with sweep second hand, housed in a 27.60 mm diameter case standing 5.70 mm tall and running at 18,000 vibrations per hour. The manual delivers complete exploded diagrams of every mechanical assembly, detailing each component's function within the movement. A comprehensive parts list cross-references each piece with its factory part number and material composition, essential for anyone performing repair, maintenance, or restoration work on this Sportsmatic caliber. The movement incorporates Seiko's Diashock shock-resistant device to protect the delicate balance assembly during wear. Whether you're a watchmaker conducting routine service or restoring a vintage Seiko automatic, this reference covers the mechanical architecture you need to understand how the 7625A operates and how its components interact.
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Document Details
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- Watchmaking