he timepiece features an innovative design with five layered discs. The discs display cumulative time within their respective ranges: 24 hours, 1,000 hours, 10,000 hours, 100,000 hours, and 1,000,000 hours, while the innermost 24-hour disc also indicates the current time of day. At present, no wristwatch other than the Seiko Star Time can measure and display up to one million hours with five disc indicators.* As the discs move, their motion is imperceptible to the naked eye. Yet, much like the time and effort accumulated by Mr. Ohtani, each progresses steadily over time. In this way, the diamond-set discs mirror the motion of the stars, which, though gradual, leave a lasting trace across the night sky. Inspired by this concept, the name Seiko Star Time was chosen for this special creation.

This year, after approximately three years of development, the watch was presented to Shohei Ohtani by Seiko Watch Corporation Chairman, CEO, and CCO Shinji Hattori.

Shohei Ohtani commented:

“I wanted to wear something that reflects the time I’ve put in so far and how much further I can go. Seeing the watch in person, it’s exactly as I had imagined, and I think it’s truly wonderful. Thank you very much.”

Shinji Hattori commented:

“We are truly delighted that Mr. Ohtani is pleased with the creation. The members of the development team, who devoted their full efforts in response to his passion, also feel that their work has been rewarded. The creation of a wristwatch with such outstanding cumulative timekeeping performance represents a major milestone for us, and we are proud to have contributed to the further development of watchmaking culture.

The five discs are significantly thicker than conventional dials and hands, presenting a major design challenge. To minimize overall thickness, a newly developed structure, created exclusively for this model, was adopted. This approach required not only close integration between the designs of the discs and the movement, but also modifications to the movement’s configuration and the establishment of new assembly methods. As a result, a solution was realized through close collaboration between the design and manufacturing teams.

Throughout the project, repeated discussions were held between Mr. Ohtani and the development team. During this process, the idea of setting a diamond into each rotating disc was adopted, resulting in a highly distinctive design. Additionally, the silicone strap was designed for enhanced wearability and produced in a custom length tailored to Mr. Ohtani’s wrist. The result combines a comfortable fit with excellent practicality.

TECHNICAL SPECIFICATIONS

• High-Intensity Titanium case and clasp
• Box-shaped sapphire crystal with anti-reflective coating on the inner surface
• Water resistance: 10 bar
• Diameter: 41.8mm, Thickness: 17.4mm
• Silicone strap