Released in 1981, the Cal. 3877 with design code 209 was part of Seiko's domestic market collection. Powered by the 3877 caliber with 28j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-b4c2a3890e4d]
Also known as: Sportsmatic, Arnie
