Released in 1987, the Cal. 4545 with design code 437 was part of Seiko's domestic market collection. Powered by the 4545 caliber with 31j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-cb3fc3ba7d0a]
Also known as: Sportsmatic, Golden Tuna
