Released in 1978, the Cal. 6689 with design code 787 was part of Seiko's domestic market collection. Powered by the 6689 caliber with 26j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-cd1ac2f2d2c4]
Also known as: Shogun, Golden Tuna
