Released in 1972, the Cal. 7070 with design code 250 was part of Seiko's domestic market collection. Powered by the 7070 caliber with 27j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-5e5d9a7a9db6]
Also known as: Tuna, Sportsmatic
