1990 – 1999
| 1990 | Hattori Seiko Co., Ltd. renamed as Seiko Corporation. Seiko serves as Official Timer of World Cup Soccer Championships in Italy. Introduction of the Seiko “The Age of Discovery” collection. Introduction of the Seiko Scubamaster, world's first computerised diver's watch to incorporate a dive table. Introduction of the Seiko Receptor Message Watch incorporating a miniaturised FM subcarrier. ![]() |
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| 1991 | Establishment of subsidiary in Finland.
Establishment of subsidiary in Taiwan. Seiko serves as Official Timer of 3rd IAAF World Championships in Athletics in Tokyo, Japan. Introduction of the Seiko Perpetual Calendar with the world's first “millennium-plus calendar”. |
| 1992 | Seiko serves as Official Timer of Barcelona Olympic Games in Spain. |
| 1993 | Introduction of the “S-YARD” Golf Clubs. |
| 1994 | Establishment of a representative office in Beijing. Seiko serves as Official Timer of Lillehammer Olympic Winter Games in Norway. Introduction of Seiko Kinetic series. |
| 1995 | Introduction of Alba “Spoon” series. |
| 1996 | Establishment of Seiko Optical Products, Inc. Establishment of Seiko Clock Inc. Establishment of Seiko Precision Inc. |
| 1997 | Establishment of Seiko Jewelry Co., Ltd. Changed Japanese company name to Seiko Kabushiki Kaisha. Introduction of Seiko Kinetic Arctura. ![]() |
| 1998 | Seiko serves as Official Timer of Nagano Olympic Winter Games in Japan. Introduction of Perpetual Calendar watch driven by world's first ultrasonic micromotor. Introduction of the Seiko Thermic, the world's first watch driven by body heat. |
| 1999 | Introduction of the Seiko Kinetic Auto Relay watch, which automatically resumes correct indication of current time. Introduction of hand wound spring-drive watch with quartz accuracy. ![]() |


