The Omega Seamaster range was created in 1948, the first Omega Seamaster 30 wasn’t introduced until 1962. The “30” in the model name refers not to the depth of water resistance, but instead to the size of the movement. Omega’s 30mm hand-wound movements proved exceedingly popular and were produced in large quantity in the mid twentieth century, ending with Calibre 269. The first Seamaster 30 watches used Calibre 286 (created.. Read More