Released in 1978, the Cal. 4511 with design code 986 was part of Seiko's domestic market collection. Powered by the 4511 caliber with 21j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-4b6fef2f77a0]
Also known as: Sportsmatic, Bellmatic
