Released in 1990, the Cal. 4498 with design code 231 was part of Seiko's domestic market collection. Powered by the 4498 caliber with 21j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-4c2e6a56faff]
Also known as: Goldfeather, Sportsmatic
