History

1881 Kintaro Hattori established K. Hattori & Co., Ltd. (presently Seiko Holdings Corporation), a watch and clock retail store.
1892 K. Hattori & Co., Ltd. established Seikosha Co., Ltd. (presently Seiko Clock Inc. and Seiko Precision Inc.) and began production of clocks.
1937 Daini Seikosha Co., Ltd. (presently SII) was established as the watch manufacturer for the Seiko Group.
1964 Reflecting its rapid progress in enhancing the accuracy and reliability of timekeeping instruments, Seiko products were selected as the official timekeeping instruments for the Tokyo Olympics.
1967 Seiko products captured all higher awards in the wrist chronometer class of the Observatoire Cantonal de Neuchatel contest held in Switzerland.
1969 The Seiko Group introduced the world’s first quartz watch.
1970 The Company launched its product diversification activities.
1983 Daini Seikosha Co., Ltd. officially changed company name to Seiko Instruments & Electronics Ltd.
1985 Completed the world’s top automated assembly system for multipurpose, small-lot production of outer watch parts.
1987 Seiko Instruments & Electronics Ltd. officially renamed Seiko Instruments Inc.
1988 Completed the world’s first automated assembling system for multipurpose, small-lot production of watch movements.
1990 New corporate brand name SII adopted as official acronym of Seiko Instruments Inc.
1992 SII Group eliminated use of chlorofluorocarbons. 
Seiko products were selected as the official timekeeping instruments for the Barcelona Olympics.
1993 Completed the SII Makuhari Building and transferred head office, sales, and development operations to the new building.
1994 Seiko products were selected as the official timekeeping instruments for the Lillehammer Olympics.
1997 Sun Street retail complex opened in Kameido, Tokyo.
1998 Seiko products were selected as the official timekeeping instruments for the Nagano Olympics.
2002 Seiko products were selected as the official timekeeping instruments for the Salt Lake City Olympics.
2004 Seiko Instruments Inc.officially changed its company Japanese name.
2004 Opened Shizukuishi Watch Studio,Japan’s only fully-integrated production system for mechanical wristwatches.
2005 Developed mercury-free and lead -free silver oxide batteries.
2006 Developed the 12 beat movement, providing the world’s highest accuracy for mechanical watches.
2009 Became a wholly-owned subsidiary of Seiko Holdings Corporation.