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Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch

Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch

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Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch

Inspired by the quiet beauty of autumn nights in northern Japan

SBGM257 “Moondrop” reflects the serene glow of moonlight and the dewdrops that glisten beneath it. The deep blue dial, textured to capture the essence of this tranquil moment, expresses the atmosphere of fall surrounding the Grand Seiko Studio Shizukuishi.
The stainless steel case measures 39.5mm in diameter and is complemented by a box-shaped sapphire crystal, maintaining the classic proportions and refined form of Grand Seiko’s traditional mechanical GMT.

Powered by the Caliber 9S66, the watch delivers both performance and versatility, allowing the wearer to track two time zones simultaneously. The gold-toned 24-hour hand lends warmth to the cool tones of the dial, while the movement’s 72-hour power reserve and +5 to -3 seconds per day accuracy stand as hallmarks of Grand Seiko’s engineering excellence. The decorated movement can be admired through the exhibition case back, completing this graceful expression of mechanical precision.

Movement

  • Caliber: 9S66
  • Power Source: Automatic
  • Jewels: 35
  • Accuracy: +5 to -3 seconds per day (when static)
  • Duration: 72 Hours

Case

  • Case Material: Stainless Steel
  • Case Diameter: 39.5mm
  • Case Thickness: 13.7mm
  • Case Length: 46.9mm
  • Lug Width: 19mm
  • Crown: Push Crown
  • Strap/Bracelet: Crocodile Leather w. buckle
  • Crystal: Box-Shape Sapphire
  • Caseback: Stainless Steel with Sapphire Crystal

Functions

  • Features: Time, Date, GMT
  • Water Resistance: 30m
  • Magnetic Resistance: 4,800 A/m
  • Special: Independent Adjust Hour Hand
Grand Seiko SBGM257 'Moondrop' Automatic GMT Watch

Inspired by the quiet beauty of autumn nights in northern Japan

SBGM257 “Moondrop” reflects the serene glow of moonlight and the dewdrops that glisten beneath it. The deep blue dial, textured to capture the essence of this tranquil moment, expresses the atmosphere of fall surrounding the Grand Seiko Studio Shizukuishi.
The stainless steel case measures 39.5mm in diameter and is complemented by a box-shaped sapphire crystal, maintaining the classic proportions and refined form of Grand Seiko’s traditional mechanical GMT.

Powered by the Caliber 9S66, the watch delivers both performance and versatility, allowing the wearer to track two time zones simultaneously. The gold-toned 24-hour hand lends warmth to the cool tones of the dial, while the movement’s 72-hour power reserve and +5 to -3 seconds per day accuracy stand as hallmarks of Grand Seiko’s engineering excellence. The decorated movement can be admired through the exhibition case back, completing this graceful expression of mechanical precision.

Movement

  • Caliber: 9S66
  • Power Source: Automatic
  • Jewels: 35
  • Accuracy: +5 to -3 seconds per day (when static)
  • Duration: 72 Hours

Case

  • Case Material: Stainless Steel
  • Case Diameter: 39.5mm
  • Case Thickness: 13.7mm
  • Case Length: 46.9mm
  • Lug Width: 19mm
  • Crown: Push Crown
  • Strap/Bracelet: Crocodile Leather w. buckle
  • Crystal: Box-Shape Sapphire
  • Caseback: Stainless Steel with Sapphire Crystal

Functions

  • Features: Time, Date, GMT
  • Water Resistance: 30m
  • Magnetic Resistance: 4,800 A/m
  • Special: Independent Adjust Hour Hand

Why Choose Skeie's

Authorized Dealer
Official Grand Seiko authorized dealer with full manufacturer warranty and authenticity guarantee
Expert Service
Over 100 years of horological expertise with certified watchmakers and personalized customer care
Fast & Secure Shipping
Insured delivery with tracking, carefully packaged to arrive in perfect condition

Every new Grand Seiko purchased at Skeie's is backed by their 5-year warranty

5
YEAR
WARRANTY
Click here to view Grand Seiko's warranty policy

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Frequently Asked Questions

We take all jewelry and watches in for review and estimation before beginning any work; the review is complimentary and we will always approve estimates with you before we begin any work.

We cannot give price estimates over the phone or online, as every piece can var

We have a team of expert goldsmiths and jewelers on site, and can work on a large range of repair needs.

Common repairs include ring sizing, polishing, rhodium plating, adjusting chain length, replacing clasps, re-stringing services, and more.

There is no appointment necessary to drop off your items for review and estimates.

Since we're located in Eugene, Oregon, we do NOT charge sales tax. The prices you see are the prices you pay!

We offer free shipping on all orders. Our standard shipping is 2-7 days; all items are fully insured and require a signature upon delivery.

Articles are accepted for credit or exchange in the U.S. if returned in salable condition within 30 days, accompanied by a sales receipt. Some exclusions may apply.