8L45

Movement

Seiko has over 100 years of watchmaking heritage and continues to work on enhancing its watchmaking techniques and skills.

Caliber 8L45

A new mechanical movement
engineered for precision and elegance.

Caliber 8L45 is distinguished by its exceptional accuracy and a long power reserve of approximately 72 hours when fully wound.
A thinner, longer mainspring provides this movement’s extended power reserve.
With a precision of +10 to -5 seconds per day, it is the most accurate movement to appear in a Seiko mechanical watch and was engineered to have the robustness and other qualities demanded of movements that power modern-day mechanical sports watches.
A wave motif, reflecting the refined skills of master artisans, has been applied to the rotor and bridges.
This movement brings a new brilliance to the essence of time.

Lineup : 8L45

Caliber 6L35

Caliber 6L35 is the thinnest automatic mechanical movement in the current Seiko lineup.
With a precision of +15 sec to -10 seconds per day, it is the most accurate movement ever to appear in a King Seiko wristwatch.

Seiko’s technology

Diashock

Diashock is a structure developed to enhance shock resistance. It is used in the movement of a mechanical watch as a bearing, such as for the balance wheel pivot, which is especially sensitive to shocks and vibration. The structure maintains high stability even when sudden shock is applied.

SPRON

Spron is an alloy developed with the aim of being resistant to tear, corrosion and wear to make mechanical watches that can be used over a long period of time, Seiko has worked on the development and manufacturing of springs for more than half a century, and it has adopted this proprietary material to be used for the mainspring and hairspring.