Seiko Presents Shohei Ohtani with One-of-a-Kind Seiko Star Time Watch — A Mechanical Timepiece Capable of Accumulating and Displaying 1 Million Hours, Inspired by the Stars in the Night Sky

Seiko Watch Corporation (President, CEO, and CCO: Shinji Hattori; Head Office: Chuo-ku, Tokyo) has developed a mechanical watch capable of accumulating and displaying up to 1 million hours, which has been presented to Major League Baseball player Shohei Ohtani.

Since 2016, the company has continuously appointed Ohtani as a brand ambassador for Seiko in Japan, marking his 10th anniversary in 2026. This unique, one-of-a-kind model, completed for this milestone, was developed in response to Ohtani’s personal reflection: 'As a baseball player, how much more time can I accumulate?' Development began approximately three years ago. Since launching Japan’s first domestic wristwatch in 1913, the company has been crafting timepieces for over 110 years. Deeply resonating with the value of accumulated time, Seiko embarked on the unprecedented project of creating a mechanical watch capable of tracking 1 million hours (approximately 114 years).

This timepiece features a groundbreaking design with five layered disk hands, each accumulating time. The rotating motion of the disks resembles the celestial trails of stars across the night sky. While the movement of stars is imperceptibly slow to the naked eye, it steadily progresses—just like the effort Ohtani has accumulated over time. Inspired by this imagery, the special model was named Seiko Star Time.

≪Presentation to Shohei Ohtani≫

Completed after approximately three years of development, the timepiece was presented to Ohtani by Shinji Hattori, President, CEO, and CCO of Seiko Watch Corporation.

≪Comment from Shohei Ohtani≫

'I’ve always wanted to materialize something tangible that reflects how much time I’ve accumulated so far, and how much more I can give. Seeing the actual watch now, it’s exactly as I imagined—quite surprising. The design is truly magnificent. Thank you very much.'

≪Comment from Shinji Hattori, President, CEO, and CCO≫

'We are delighted that he is pleased. Our development team, who poured their hearts into this project inspired by Ohtani’s passion, feels deeply rewarded. The birth of a timepiece with globally exceptional cumulative performance marks a significant step for us and is a source of pride, contributing to the further evolution of watch culture. We hope this watch allows Shohei Ohtani to reflect on his journey so far while dreaming of the future ahead.'

≪Model Features≫

Seiko Star Time is a one-of-a-kind mechanical watch capable of accumulating and displaying up to 1 million hours, featuring five disk hands. (*).

The five rotating disk hands accumulate time, with the innermost disks indicating accumulated periods of 24 hours, 1,000 hours, 10,000 hours, 100,000 hours, and 1 million hours, respectively, displayed beneath red markers. The central disk hand also shows the current time. To minimize the perceived thickness of the five-layered disk hands, a newly designed case structure was developed. This innovation required changes to the movement shape and the establishment of new assembly methods, achieved through cross-departmental collaboration between design and manufacturing teams.

* As of July 2026. Based on company research.

Throughout the project, multiple consultations were held with Ohtani, leading to the innovative idea of embedding diamonds into each disk hand, achieving unprecedented exclusivity and uniqueness.

Additionally, the silicone strap was custom-designed for optimal fit, tailored to Ohtani’s wrist size, ensuring both comfort and aesthetic elegance during wear.

≪Documentary Video on Seiko Star Time Development≫

Title: <An Unprecedented Challenge> Behind the Development of Seiko’s 1-Million-Hour Accumulation Watch

Release Date: Friday, July 3, 2026

Available on YouTube (Seiko Watch Japan Official Channel):

https://www.youtube.com/watch?v=OfTOC47NyrQ

≪Special Exhibition Schedule for Seiko Star Time Master Sample≫

1. Shohei Ohtani 10th Anniversary as Brand Ambassador Event SHO-ism Seiko | Shohei Ohtani - 10 Years Journey

To commemorate Ohtani’s 10-year ambassadorship, special events will be held in Tokyo and Osaka. These events will showcase not only Ohtani’s 10-year journey and past limited-edition models but also the Seiko Star Time master sample. We invite you to attend.

Please check the event’s dedicated webpage for admission details.

Tokyo Venue

Dates: Friday, July 3, 2026 – Sunday, July 5, 2026 (Time TBC)

Location: 6-35-6 Jingumae, Shibuya-ku, Tokyo

Admission: Free / Reservation required

Details: https://www.seikowatches.com/jp-ja/special/sho-ism/

Osaka Venue

Dates: Saturday, August 1, 2026 – Sunday, August 2, 2026 (Time TBC)

Location: Knowledge Plaza, North Tower, Grand Front Osaka

Admission: Free / Open access

Details: https://www.seikowatches.com/jp-ja/special/sho-ism/

2. Seiko Star Time Exhibition – Behind the Development Journey

Dates: Friday, July 17, 2026 – Monday, July 20, 2026 (Time TBC)

Location: Special Exhibition Hall, SEIKO HOUSE (4-5-11 Ginza, Chuo-ku, Tokyo)

Admission: Free / Full reservation required for Seiko ID members only

https://airrsv.net/seiko-event/calendar

* Membership in the Seiko ID program is required for entry.

≪Shohei Ohtani (Ohtani Shohei) Profile≫

Born in 1994 in Iwate Prefecture.

Height: 193 cm, Weight: 95 kg, Right-handed pitcher, Left-handed batter.

2012: Joined Hokkaido Nippon-Ham Fighters as a first-round draft pick. Gained attention for his 'two-way player' role as both pitcher and batter.

2016: Contributed to the Fighters’ Japan Series victory with dual excellence as pitcher and batter, earning the Pacific League MVP.

2018: Joined the Los Angeles Angels, winning the American League Rookie of the Year.

2021: Achieved 46 home runs as a batter and 9 wins as a pitcher, winning the American League MVP.

2023: Became the first player in history to achieve double-digit wins and double-digit home runs in two consecutive seasons, winning his second AL MVP by unanimous vote.

2024: Transferred to the Los Angeles Dodgers, achieving MLB’s first-ever 50 home runs and 50 stolen bases in a single season.

Won the National League Home Run and RBI titles, led the team to a World Series victory, and earned the NL MVP.

2025: Appeared in 14 games as a pitcher while hitting a career-high 55 home runs in a season.

Achieved back-to-back World Series championships and his third consecutive MVP award.