Seiko has turned a philosophical question from Shohei Ohtani into a unique piece of haute horlogerie. The Japanese watchmaker, which has counted the baseball superstar as a brand ambassador in his home country for ten years, has created the “Star Time”—a one-of-a-kind mechanical wristwatch presented to Ohtani on July 3, 2026. The project began with a simple query from the athlete: how much time did he have left in his playing career? Seiko’s response, delivered three years later, is a device that measures time on a vastly larger scale.

A Celestial Approach to Elapsed Time

The watch’s underlying concept is elegantly straightforward yet mechanically ambitious. The Star Time is engineered to track cumulative hours up to a total of one million—equivalent to just over 114 years. Five layered, rotating discs manage the display, each corresponding to a specific tier of magnitude: 24 hours, 1,000 hours, 10,000 hours, 100,000 hours, and 1,000,000 hours. The innermost disc simultaneously indicates the current time. Each of the five discs is set with a diamond. Their motion is so slow that it cannot be perceived by the naked eye, an effect that inspired the watch’s name. Seiko likens the movement to the apparently static drift of stars across the night sky, visible only through time-lapse photography. According to the company, the Star Time is the only wristwatch in the world capable of displaying up to one million hours using this layered-disc method.

Technical Construction and Personalized Fit

The case is machined from Seiko’s proprietary High-Intensity Titanium, measuring 41.8 mm in diameter and 17.4 mm in thickness. The substantial height is a direct result of packaging the five nested disc mechanisms into a wearable format. A box-shaped sapphire crystal with an inner anti-reflective coating protects the dial, while the case offers 10-bar water resistance. Every detail was tailored to its recipient; the silicone strap was custom-cut to match Ohtani’s exact wrist measurements, ensuring a personal fit for the piece unique.

Seiko Chairman and CEO Shinji Hattori presented the watch to Ohtani in person. As a bespoke commission, the Star Time will remain a one-off creation, and the company has confirmed there are no plans for a production version. Whether its design language or mechanical concepts influence a future commercial release remains an open question. For now, the Star Time stands as a compelling artifact of watchmaking, conceived from an athlete’s reflection on the finite nature of a career and interpreted through the lens of deep time.

Source: www.seikowatches.com

Filed under — Wearables · Seiko · Shohei Ohtani