Released in 1967, the Cal. 6360 with design code 143 was part of Seiko's domestic market collection. Powered by the 6360 caliber with 18j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-f1c6d8d7e68d]
Also known as: Helmet, Baby Tuna
