Seiko's new one-of-a-kind titanium collab watch can track up to 1 million hours

Shohei Ohtani has been a Seiko brand ambassador in Japan for a decade now, and somewhere along the way, he asked the brand's development team a question — how much time did he have left in his baseball career? Well, Seiko took it quite literally. Three years later, the result is the Star Time, a one-of-a-kind wristwatch presented to Ohtani today, July 3, 2026.

The technical premise is not that complex, all things considered: the Star Time tracks cumulative time up to one million hours — just over 114 years. Five layered rotating discs handle the display, each responsible for a different range: 24 hours, 1,000 hours, 10,000 hours, 100,000 hours, and 1,000,000 hours. The innermost disc is also the current time indicator. Each disc carries a diamond. The discs move too slowly to observe with the naked eye, which is where the "Star Time" name comes from. It's very akin to the imperceptible motion of stars across the sky, unless captured in a timelapse. Seiko says it's the only wristwatch in the world capable of displaying up to one million hours this way.

On the case side, it's built from High-Intensity Titanium at 41.8 mm wide and 17.4 mm thick — the thickness is a consequence of housing five nested disc mechanisms in a wearable package. A box-shaped sapphire crystal with inner anti-reflective coating sits on top, 10-bar water resistance is on board, and the silicone strap was custom-cut to Ohtani's own wrist measurements.

Seiko Chairman and CEO Shinji Hattori presented the watch to Ohtani in person. Unfortunately, it's a one-off piece, made for one person, and there are no plans for a production version. However, whether it influences a commercial release is a different question entirely. Regardless, the Star Time is a striking piece of watchmaking, and it's hard not to find it interesting.

Buy the Seiko SRPD55 on Amazon