Released in 1980, the Cal. 5666 with design code 148 was part of Seiko's domestic market collection. Powered by the 5666 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-3a5b3d7b2c69]
Also known as: Bullhead, Goldfeather
