Released in 1984, the Cal. 4425 with design code 974 was part of Seiko's domestic market collection. Powered by the 4425 caliber with 21j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-55f0c4a5b4f8]
Also known as: World Timer, Baby Tuna
