Released in 1991, the Cal. 4439 with design code 761 was part of Seiko's domestic market collection. Powered by the 4439 caliber with 27j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-aec9c3e3e2d6]
Also known as: Tuna, Goldfeather
