Released in 1984, the Cal. 7172 with design code 522 was part of Seiko's domestic market collection. Powered by the 7172 caliber with 22j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-6d58ef5c5b5d]
Also known as: Sportsmatic, Golden Tuna
