Released in 1981, the Cal. 4573 with design code 253 was part of Seiko's domestic market collection. Powered by the 4573 caliber with 35j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-e6e7eabe26c9]
Also known as: Sportsmatic, Baby Tuna
