Seiko is a consortium of several companies. They have production sites scattered around parts of japan.
The development of watchmaking in japan did not follow the same pattern as the west. They were left behind in the production of watches and had to import from other countries. It was a time when the young founder of seiko watches at 13 worked as an apprentice in a repair shop for watches. It was back in 1874. At the age of 21, in 1881, he started his boutique called K.Hattori to repair imported watches and clocks. By 1892 he established his facility to manufacture watches. In 1895 they produced their pocket watch, and by the end of the 19th century, they had their alarm clock.
Some of the features include nickel plating and protection against rust. When you see the timeline, you notice that he started from scratch or rather nothing and, within ten years, became a full-fledged company that made their watches. To improve his company Kintaro Hattori’s methods, he visited the west and studied the manufacturing and production process there. After learning ideas on industrialization, he came back to japan to apply them in seiko watches. It was the turning point of production in the country as industrialization began.