Grand Seiko Mecanic Automatic GMT SBGM257 Detailed description

In autumn, when the moon bathes the sky in its soft, gentle glow, dew drops shimmer in the night light, capturing the poetry of the season. The Grand Seiko SBGM257 “Moondrop” is inspired by this fleeting moment, expressed through its textured blue dial.

The dial features a modern geometric spiral pattern designed to catch and reflect light differently depending on the viewing angle. Like dew drops sparkling under moonlight, the surface subtly changes appearance, creating refined visual depth and dynamic luminosity.

This interplay of light is enhanced by a Zaratsu-polished case, a signature Grand Seiko finishing technique that ensures sharp lines and flawless reflections. Inside the watch beats the mechanical automatic GMT Caliber 9S66, renowned for its outstanding reliability, precision, and high-end construction.

Thanks to this movement, the SBGM257 allows the simultaneous display of two time zones, making it ideal for travelers and enthusiasts of fine watchmaking.

The gold GMT hand can be set to a reference time or any time zone of choice.

The local time can be adjusted in one-hour increments via the intermediate crown position for simple, intuitive operation.

With a power reserve of approximately three days, the Moondrop offers autonomy, ease of use, and lasting performance while capturing the luminous poetry of the autumn night.