Released in 1976, the Cal. 0731 with design code 193 was part of Seiko's domestic market collection. Powered by the 0731 caliber with 29j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-d9b49d96c6d3]
Also known as: Silverwave, Golden Tuna
