Released in 1976, the Cal. 0780 with design code 307 was part of Seiko's domestic market collection. Powered by the 0780 caliber with 27j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-14c3f75d2b6b]
Also known as: Shogun, Golden Tuna
