Released in 1975, the Cal. 4448 with design code 240 was part of Seiko's domestic market collection. Powered by the 4448 caliber with 35j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-a2b0a7d79e5c]
Also known as: Sumo, Goldfeather
