Seiko Dolce AGS (automatic quartz movement) Full set 4M21-0A20Maker: Seiko Model: Dolce Material: Plated Dimensions: 34. 5 Crystal: glass convex Description & Condition report: comes in original box and instruction The Seiko AGS (automatic generating system), introduced in Germany in January 1988, was the world's first quartz watch to be equipped with an automatic power generating system. A rather unique case design, much fatter than the traditional dolce, most likely to fit the AGS system in the case . forever