Released in 1980, the Cal. 7180 with design code 778 was part of Seiko's domestic market collection. Powered by the 7180 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-6b0fd72ed1e1]
Also known as: Sportsmatic, Baby Tuna
