Released in 1992, the Cal. 6390 with design code 522 was part of Seiko's domestic market collection. Powered by the 6390 caliber with 30j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-38d8d82d3e2a]
Also known as: Sumo, Goldfeather
