Released in 1991, the Cal. 6398 with design code 596 was part of Seiko's domestic market collection. Powered by the 6398 caliber with 24j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-7e792dd8b3d2]
Also known as: Sportsmatic, Baby Tuna
