Released in 1967, the Cal. 6174 with design code 821 was part of Seiko's domestic market collection. Powered by the 6174 caliber with 20j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-d3f9c18d68c3]
Also known as: Silverwave, Sportsmatic
