ENERGY IS EVERYTHING

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In 1959, Seiko invented the Magic Lever, the ingenious mechanism that winds the mainspring more efficiently. This device harnesses all the energy created by the rotor as it turns in both directions, clockwise and anti-clockwise, greatly increasing the power transfer to the mainspring and delivering faster winding speed. Seiko 5 Sports ’s Caliber 4R inherited this technology and brought a new level of convenience to the mechanical watch.

Seiko is one of the few ‘manufactures’ that is capable of producing every component in house, including the main spring and balance spring, parts that form the very heart of every mechanical caliber.

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CONSTANT EVOLUTION. CONSTANT IMPROVEMENT. 50 YEARS AND COUNTING