Collaboration of Spring IC

Moves the needle with a force of spring to get coming loose, 

while controlling the accuracy by IC and crystal oscillator, 

that is a mechanism of originality unparalleled in the world, 

so called Spring Drive.

It is an innovative mechanism of Seiko original 

that combines both the taste of mechanical watch 

and the technology of microelectronics. 

Spring Drive to assume the natural movement 

of people to use as a power source is the watch which connected 

with the person to use and the most advanced technology closely related each other.