| 1918 |
|
| 1918 |
Yamazaki established the Shōkōsha Watch Research Institute (now Citizen Watch) in 1918. |
| 1918 |
Founded (Predecessor of Citizen Watch, Shogoka Clock Research Institute established) |
| 1918-03 |
The predecessor of Seiko Watch, the Shōkōsha Watch Research Institute, was established. |
| 1924-12 |
Completion of the first pocket watch. |
| 1924-12 |
First pocket watch completed |
| 1930-05 |
Establishment of Citizen Watch Co., Ltd. |
| 1930-05 |
Citizen Watch Co., Ltd. established |
| 1930-05 |
Yosaburo Nakashima appointed as President |
| 1931-06 |
Completion of the first wristwatch. |
| 1931-06 |
First wristwatch completed |
| 1936-05 |
Construction of the new Tanashi factory. |
| 1936-05 |
New Tanishi Factory established
Start of machine tool production |
| 1941-07 |
Start of machine tool manufacturing. |
| 1945-10 |
Nakashima Susumu appointed as president. |
| 1945-10 |
Susumu Nakashima appointed as President |
| 1946-03 |
Establishment of Citizen Trading Co., Ltd. |
| 1946-03 |
Eiichi Yamada appointed as President |
| 1949-12 |
Establishment of Technical Research Institute
Establishment of Citizen Office Machines |
| 1950-05 |
|
| 1950-12 |
|
| 1951-10 |
|
| 1952-03 |
国产首款日历手表发售 |
| 1953-03 |
Became an affiliate of Rhythm Watch Co., Ltd. |
| 1955-12 |
Started exporting wristwatches. |
| 1960-03 |
与美国BULOVA公司签订进出口合同 |
| 1960-03 |
Signed a technical assistance contract with India. |
| 1960-10 |
|
| 1961-04 |
Establishment of the Technical Research Institute. |
| 1961-12 |
Establishment of the Citizen Office. |
| 1965-03 |
Started production of commercial machines (calculators, camera shutters) |
| 1965-03 |
Start of office machine production (adding machines, camera shutters) |
| 1965-10 |
Established an office in West Germany (at that time), officially exported products to Europe |
| 1965-10 |
Opened office in West Germany (at that time), started full-scale export to Europe |
| 1966-03 |
国产首款电子手表“X8”发售 |
| 1966-03 |
Launched the first domestically produced electronic watch "X-8" |
| 1970-03 |
研发CNC自动车床“CINCOM” |
| 1970-03 |
Developed CNC automatic lathe "Shincom" |
| 1971-06 |
Establishment of the Precision Machinery Division |
| 1971-06 |
Establishment of Precision Machinery Division |
| 1976-03 |
Started manufacturing quartz crystal oscillators |
| 1976-03 |
Citizen Systems Co., Ltd. was established |
| 1976-10 |
Complete acquisition of 5 consolidated subsidiaries (Citizen Electronics, Miyota, Simeo Precision, Sayama Precision Industries, Lake Kawaguchi Precision)
Change of trade names for each company in the Citizen Group |
| 1978-02 |
总公司迁至东京新宿三井大楼 |
| 1980-06 |
业界首款微电脑控制的击打式行式打印机发售 |
| 1981-06 |
Mr. Rokuyō Yamazaki appointed as President |
| 1981-10 |
Establishment of the Information Equipment Division |
| 1982-09 |
Establishment of the Special Sales Department, officially started sales of watch parts |
| 1983-03 |
研发芯片LED灯CL系列 |
| 1983-05 |
IC传感器电子体温计发售 |
| 1987-06 |
Mr. Michio Nakajima appointed as President |
| 1990-01 |
Established annual commendation system "CITIZEN OF THE YEAR" |
| 1992-02 |
收购德国加工机床制造商BOLEY公司 |
| 1993-05 |
Establishment of CITIZEN SYSTEMS Corporation |
| 1993-10 |
Connected five companies (Citizen Electronics, MIYOTA, CIMEO Precision, Sayama Precision Industries, Lake Kawaguchi Precision) as wholly owned subsidiaries |
| 1993-10 |
Name changes of Citizen Group companies |
| 2000 |
|
| 2000 |
|
| 2000-09 |
|
| 2000-09 |
|
| 2000-10 |
|
| 2007-04 |
Company name changed to CITIZEN HOLDINGS Corporation |
| 2007-04 |
Changed the trade name to Citizen Holdings Co., Ltd. |
| 2008-01 |
Acquisition of Bulova Corporation shares |
| 2008-04 |
Mr. Mitsuyuki Kanamori appointed as President |
| 2008-04 |
President Mitsuyuki Kanamori appointed |
| 2008-07 |
CITIZEN MIYOTA merged with CITIZEN FINETECH to establish CITIZEN FINETECH MIYOTA Corporation |
| 2008-07 |
Merger of Citizen Miyota and Citizen Fine Tech, establishment of Citizen Fine Tech Miyota Co., Ltd. |
| 2008-10 |
MIYANO Corporation became a connected subsidiary |
| 2008-10 |
Made Miyano Co., Ltd. a consolidated subsidiary |
| 2011-04 |
CITIZEN MACHINERY merged with MIYANO to establish CITIZEN MACHINERY MIYANO Corporation |
| 2011-04 |
Merger of Citizen Machinery and Miyano, establishment of Citizen Machinery Miyano Co., Ltd. |
| 2011-09 |
Launch of the world's first solar-powered watch that receives time information from artificial satellites, "Eco-Drive Satellite Wave" |
| 2012-04 |
Mr. Toshio Togura appointed as President |
| 2012-04 |
President Toshiro Tokura appointed |
| 2012-04 |
Acquisition of Prosera Corporation shares |
| 2013-07 |
CITIZEN WATCH MANUFACTURING Corporation established |
| 2013-07 |
Establishment of Citizen Watch Manufacturing Co., Ltd. |
| 2014-04 |
Achieved a total shipment of 100,000 NC automatic lathes |
| 2015-04 |
CITIZEN MACHINERY MIYANO company name changed to CITIZEN MACHINERY Corporation |
| 2015-04 |
CITIZEN FINETECH MIYOTA merged with CITIZEN SEIMITSU to establish CITIZEN FINEDEVICE Corporation |
| 2015-04 |
Changed the trade name of Citizen Machinery Miyano to Citizen Machinery Co., Ltd.
Merged Citizen Fine Tech Miyota and Citizen Seimitsu, establishment of Citizen Fine Device Co., Ltd. |
| 2016-07 |
Acquisition of FREDERIQUE CONSTANT |
| 2016-07 |
Acquisition of Frederique Constant shares |
| 2016-10 |
CITIZEN HOLDINGS, CITIZEN WATCH, CITIZEN BUSINESS EXPERT merged to establish CITIZEN WATCH Co., Ltd. (Seiko Watch Corporation) |
| 2016-10 |
世界上最薄的光动能手表 "Eco-Drive One"发售 |
| 2016-10 |
Citizen Holdings, Citizen Watch, and Citizen Business Expert merged, changed trade name to Citizen Watch Co., Ltd.
Launch of the world's thinnest solar-powered watch, Eco-Drive One |
| 2018-05 |
100th anniversary of the Seiko Group |
| 2018-05 |
100th anniversary of Citizen Group founding |
| 2019-04 |
Toshihiko Sato appointed as President |
| 2019-04 |
President Toshihiko Sato appointed |
| 2019-09 |
世界最高精度“年差±1秒”的光动能驱动机芯搭载的《The CITIZEN》发布 |
| 2019-09 |
Launch of "The Citizen," equipped with the world's highest precision "annual difference ±1 second" Eco-Drive movement |
| 2025-04 |
Yoshitaka Oji appointed as President |
| 2025-04 |
President Yoshitaka Oharu appointed |
