Released in 1978, the Cal. 5663 with design code 330 was part of Seiko's domestic market collection. Powered by the 5663 caliber with 24j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-7d6ebb8dbe0d]
Also known as: Sportsmatic, Arnie
