Presage Movements

Watches of today contain many technologies that were first developed by Seiko or technologies that are unique to Seiko. Presage has inherited over 100 years of watchmaking tradition, and ingenuity and ideas continue to be added to it to evolve it further.

  • The technologies adopted in each model differ.

 

Mechanical

  • Mechanical watches move their hands by using a spring as a power source. They achieve the function of displaying the time by mechanical means only, with no electric controls.

TRIMATIC

TRIMATIC refers to three proprietary technologies developed by Seiko to make mechanical watches easy to use in daily life and precise over a long period. These structures, parts, and materials, named Diashock, Magic Lever, and Spron, respectively, are supported by innovation and tradition and are used in many models of Presage.

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.

Magic Lever

The Magic Lever has the important role of efficiently winding the mainspring in an automatic movement. It has two spring pullets of different shapes that are always in contact with the transmission wheel used to rotate the barrel. Regardless of the rotational direction of the rotor, the two pullets of the Magic Lever always generate a unidirectional movement of the transmission wheel enabling efficient winding of the mainspring.

SPRON

Spron is an alloy material developed with the aim of being resistant to tear, corrosion and ware 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 its proprietary material Spron to be applied for the mainspring and hairspring. 

Vertical clutch

Stopwatch features that boast precise operation

Caliber 8R48, adopted by Presage, uses a column wheel* and vertical clutch in the operational systems for the stopwatch, which can be said to be a feature of a high-end chronograph. The vertical clutch is a system that was first developed by Seiko in 1969. It is a power transmission system with little hand skipping when it starts and stops and has excellent shock resistance. In addition, it is equipped with a proprietary three-pointed hammer that resets multiple hands realizing precise operation and excellent durability.

  • A column wheel is a gear used to control the stopwatch.

 

Spring Drive

Spring Drive is Seiko’s mechanism that achieves high precision with an unprecedented accuracy of one second per day by controlling it with precise signals from the quartz oscillator.

Tri-synchro Regulator

If the mainspring is used as a power source, it would unwind immediately unless it is controlled.
In Spring Drive, Seiko’s proprietary speed control mechanism, the Tri-synchro Regulator utilizes electric signals from the quartz oscillator to apply an electromagnetic brake via a rotor. Three elements, mechanical force, electric signals, and magnetic force, interact to generate the precise motion of the seconds hand.

Japanese aesthetics expressed by the seconds hands.

One of the characteristics of Spring Drive is the silent glide motion of its seconds hand generated by the Tri-synchro Regulator, a proprietary speed control mechanism that achieves stable precision. It can be said to be the one and only movement that can express a uniquely Japanese aesthetic sense with just the motion of a hand. 


 

Design, Assembly, and Inspection

Seiko has over 100 years of watchmaking heritage, and continues to work on enhancing its watchmaking techniques and skills. Through rigorous inspections, features such as water resistance, and functions such as chronographs, as well as appearance, precision, dirt and lint contamination, and rotation of hands are checked, and only those products that meet Seiko’s standards are accepted.