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Seiko is a Japanese manufacturer of timing, measurement, and display systems for sport, based in Tokyo. The equipment is made and sold by Seiko Time Creation Inc., a subsidiary of Seiko Group Corporation, the holding company that traces its origins to the watch shop Kintarō Hattori opened in 1881.123 Seiko is named among the manufacturers of aquatic timing systems, with Colorado Time Systems, Swiss Timing (Omega) and Daktronics,4 though its record at international championships is documented mainly in athletics rather than in aquatics.

The Seiko hardware documented in the equipment reference is the swimming start-signal equipment built around the company’s electronic start sound generators.

History

The company that makes the timing equipment is older than its present name. It was founded in 1966 as Goko, a sales agency for K. Hattori and Co.’s facility clocks, and incorporated in 1970. It was renamed Goko Time System in 1984 and Seiko C.S.T. in 1990, and became a wholly owned subsidiary in 1993. It took over the facility-clock business in 1997, and in 1998 took over the sports timing and measurement business from Seiko Corporation, at which point it was renamed Seiko Time Systems. Manufacturing and maintenance followed from Seiko Precision in 2005, and timing-support services from the group holding company in 2014.5

Seiko Time Creation Inc. was formed on 1 April 2021, when Seiko Time Systems and Seiko Clock Inc. were brought together. Seiko describes the event as a management integration rather than a merger and does not say which company survived in law, though the new company keeps Seiko Time Systems’ 1970 establishment date and its whole chronology.65 The company’s web address moved from seiko-sts.co.jp to seiko-stc.co.jp with the change of name, and the old domain still redirects.

The combined company has since been narrowed back to time systems. It transferred its factory-automation business in 2024, and its clock business to Seiko Watch Corporation in two stages, sales in April 2025 and the clock technology division in April 2026.57 Its headcount fell accordingly, from 390 at formation to 195 as of 1 April 2026, when it had capital of ¥500 million and was headed by Takeshi Ichikawa from offices in Kōtō, Tokyo.61

Three companies in the wider group are easy to confuse, and the distinction matters when reading patents and product literature. Seiko Time Creation makes the timing equipment. Seiko Instruments Inc. is a separate subsidiary working in electronic and precision components, and is the assignee of the swimming-timing patents cited elsewhere on this wiki. Seiko Group Corporation, renamed from Seiko Holdings Corporation on 1 October 2022, is the parent of both.28 Seiko Epson Corporation, despite the name, is not part of that group at all: it is separately listed and independently run, sharing the Hattori origins and a cross-shareholding of about 3 %, and it remains a major movement supplier to Seiko Watch Corporation.29

Products

Seiko Time Creation sells facility clocks, sports timing and measurement equipment, digital signage, large display boards and baseball scoreboards, and provides timing support services at sporting events.1

  • Swimming, a system built around the PS-1400 electronic start sound generator and the PT-9000 printing timer, with starting blocks carrying relay take-off sensors, touch plates, per-lane lane boxes, underwater video, a light-stimulus start signal system for swimmers with a hearing impairment, and scoreboards.10
  • Athletics, photo-finish systems, the PS-200 start signal generator and its loud-hailer sets, track timers, photobeam units, wind gauges and field equipment.11
  • Multi-timing, a portable line of sports printers, timers and electronic starters usable across sports.11

Individual Seiko products are catalogued in the equipment reference: the swimming start sound generators, whose current model is the PS-1400 and which replaced the PS-1300 and before it the much larger PS-1200; and the portable cross-sport Electronic Starting System, whose earlier generations are the PS-105, PS-107 and PS-109; and the two touch plates, the AQUA type and the narrower full-frame type. Timers and scoreboards are added as those pages are written.

In swim timing

Seiko’s swimming equipment is sold as a certified system rather than as separate parts. The company states that the starter, the starting blocks, the backstroke ledge, the lane boxes, the AQUA-type touch plate and the printing timer conform to World Aquatics rules and are certified Class AA and Class A by the Japan Swimming Federation. The certification is not uniform across the range: the 1,900 mm full-frame touch plate carries Japan Swimming Federation Class A alone, with no World Aquatics line.10 The start-systems overview covers the governing-body requirements those certifications answer to.

Seiko sells starters on both sides of that line. The deck generators are swimming equipment and carry the certifications; the portable Electronic Starting System is listed in the athletics catalogue as general multi-timing equipment and carries none.1011

In competition

Seiko’s timekeeping record is documented most fully in athletics rather than in aquatics. World Athletics states that Seiko has been its choice at major championships since 1985, that it has supplied timing and measurement to more than 190 World Athletics events, and that it had served continuously as official timer for seventeen consecutive championships up to and including Oregon in 2022.1213 Seiko dates the run from the second championships, at Rome in 1987, and puts the event count at more than 180 rather than 190.14

Seiko’s own history also lists it as official timekeeper of the Olympic Games at Tokyo in 1964, Sapporo in 1972, Barcelona in 1992, Lillehammer in 1994, Nagano in 1998 and Salt Lake City in 2002, with no later entry.14

In aquatics its work is mainly domestic. The Japan Swimming Federation lists Seiko on its own sponsor page as an official timekeeping partner, and Seiko says it is the sole such partner and dates the relationship to 2003, neither of which the federation’s page states.151410 Seiko supports the Japanese domestic calendar, including the Japan Swimming Championships, the National Sports Festival, the national school championships and the Japan Open.10

Seiko timed the swimming at the 2001 World Aquatics Championships in Fukuoka, the only edition it is known to have timed, and the touchpads malfunctioned repeatedly across the eight days of competition. Times had to be corrected from backup timing or video evidence, and the system recorded an early take-off of minus 0.06 s that disqualified the United States women’s 4 × 200 m freestyle relay on a successful British protest. The disqualification stood, and the governing body, then FINA, instead awarded the United States a second set of gold medals without changing the official result. It defended the equipment, saying it had a fine reputation and that swimmers had to strike the pads in the right way, then signed a three-event deal with Swiss Timing covering the 2002 world short-course championships in Moscow and the 2003 and 2005 championships in Barcelona and Montreal.1617

Omega has been an official partner of World Aquatics since 1973, and timed the 2023 championships when they returned to Fukuoka.1819

See also

References

Footnotes

  1. Seiko Time Creation, 会社概要 (current as of 1 April 2026: capital ¥500 million, 195 employees, president Takeshi Ichikawa). ↩ ↩2 ↩3

  2. Seiko Group Corporation, グループ会社一覧 (listing Seiko Time Creation and Seiko Instruments as separate subsidiaries, and omitting Seiko Epson). ↩ ↩2 ↩3

  3. Seiko Group Corporation, 沿革 (Kintarō Hattori’s 1881 founding of 服部時計店). ↩

  4. Wikipedia, Aquatic timing system. ↩

  5. Seiko Time Creation, 沿革 (the Goko to Seiko Time Creation chronology, including the 1998 transfer of the sports timing business from Seiko Corporation). ↩ ↩2 ↩3

  6. Seiko Holdings Corporation, notice of the integration forming Seiko Time Creation Inc. (15 December 2020; effective 1 April 2021, with 390 employees at formation). ↩ ↩2

  7. Seiko Time Creation, notice of the clock technology division transfer (19 February 2026; the sales business having moved in April 2025). ↩

  8. Seiko Group Corporation, notice of the change of company name (Seiko Holdings Corporation renamed Seiko Group Corporation, effective 1 October 2022). ↩

  9. Plus9Time, The Seiko family companies (Seiko Group Corporation and Seiko Epson as separately listed, independently run companies). ↩

  10. Seiko Time Creation, Swimming Systems Catalogue (December 2025), pp. 2, 5, 6, 7, 10, 13 and 17. ↩ ↩2 ↩3 ↩4 ↩5

  11. Seiko Time Creation, Track and Field Systems Catalogue, pp. 3–15 and 26 (undated; its back cover still names the FA division, so it predates the 2024 transfer). ↩ ↩2 ↩3

  12. World Athletics, Seiko (a partner since 1985, supplying more than 190 World Athletics events). ↩

  13. World Athletics, Seiko designated official timer for Oregon22 (20 June 2022; seventeen consecutive championships counting Oregon22 itself, the 18th edition). ↩

  14. Seiko, History of Seiko and sports (the Rome 1987 start, the count of more than 180 events, the Olympic Games list, and the 2003 date for the Japan Swimming Federation partnership). ↩ ↩2 ↩3

  15. Japan Swimming Federation, スポンサー (listing Seiko as 公式計時パートナー, official timekeeping partner). ↩

  16. Swimming World, FINA Knocks USA As “Sore Losers”; Time Runs Out for Seiko (28 July 2001; the touchpad faults and the switch to Swiss Timing for 2002, 2003 and 2005). ↩

  17. Wikipedia, Swimming at the 2001 World Aquatics Championships. ↩

  18. World Aquatics, Omega (“OMEGA has been an official partner of FINA since 1973”). ↩

  19. Worldtempus, Omega at the World Aquatics Championships Fukuoka 2023. ↩

Last updated July 27, 2026.