| 1881 |
K. Hattori & Co., Ltd, predecessor of today's SEIKO HOLDINGS CORPORATION, established by Kintaro Hattori. |
| 1892 |
Seikosha clock supply factory established; production of wall clocks begins. |
| 1937 |
Watch production split off as Daini Seikosha Co., Ltd., predecessor of today's Seiko Instruments Inc. |
| 1959 |
Suwa Factory of Daini Seikosha becomes independent as Suwa Seikosha, predecessor of today's SEIKO EPSON CORPORAION. |
| 1968 |
Establishment of subsidiary in Hong Kong. |
| 1970 |
Establishment of subsidiary in USA. |
| 1971 |
Establishment of subsidiary in UK. |
| 1974 |
Establishment of subsidiary in Brazil. |
| 1977 |
Establishment of subsidiary in Australia. |
| 1981 |
Establishment of representative office in Dubai. |
| 1994 |
Establishment of representative office in Beijing. |
| 2001 |
Establishment of SEIKO WATCH CORPORATION as part of the new SEIKO HOLDINGS CORPORATION. |
| 2003 |
Establishment of subsidiary in China. |
| 2007 |
Establishment of subsidiary in India. |
| 2008 |
Establishment of subsidiary in Russia. |