Released in 1984, the Cal. 5691 with design code 456 was part of Seiko's domestic market collection. Powered by the 5691 caliber with 21j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-8ea68b7b8d7d]
Also known as: Golden Tuna, Arnie
