Daini Seikosha ("the Second Seikosha") was founded in 1937 as a watch production operation for Seikosha K. Hattori & Co, Ltd., forerunner of today's Seiko. Daini became Seiko Instruments & Electronics in 1985. After becoming part of Seiko Holdings in 2009, the high-end watchmaking operation of Seiko Instruments became known as Shizukuishi Watch Studio, maker of Grand Seiko, Credor, and high-end watches and movements.
Movement Families
Daini Seikosha was responsible for the following movement families:
- Seiko 4400
- Seiko 4500
- Seiko 5100
- Seiko 5200
- Seiko 6800
- Seiko 7000
