Released in 1976, the Cal. 4456 with design code 281 was part of Seiko's domestic market collection. Powered by the 4456 caliber with 22j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-a63f1b1f7fd9]
Also known as: Sportsmatic, Bellmatic
