Released in 1976, the Cal. 5229 with design code 391 was part of Seiko's domestic market collection. Powered by the 5229 caliber with 20j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-e3e18bc2e40e]
Also known as: Sportsmatic, Baby Tuna
