Released in 1983, the Cal. 6680 with design code 918 was part of Seiko's domestic market collection. Powered by the 6680 caliber with 29j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-6f0e4b1b08ed]
Also known as: Tuna, Baby Tuna
