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.
With its 39.5mm stainless steel case, box-shaped sapphire crystal, and crocodile leather strap, the SBGM257 continues Grand Seiko’s tradition of understated luxury and impeccable proportions.
The SBGM257 “Moondrop” draws from the quiet glow of autumn moonlight and dew shimmering in the cool night air. Its textured blue dial embodies the calm and depth of fall around the Grand Seiko Studio Shizukuishi.
Powered by the Caliber 9S66 automatic GMT, it tracks two time zones with precision and ease. The gold-toned 24-hour hand complements the dial’s rich hue, while the decorated movement is visible through the exhibition case back.
Free 2-3 Day Shipping
2-Week Returns & Exchanges
Exclusive 6-Year Warranty
Customer Support
Free shipping is 2-3 business days via Fed Ex Signature Required. Orders placed before 2 pm ET are generally processed and shipped on the same business day, and orders placed after 2 pm ship the following business day. Orders are processed Monday – Friday, and orders placed on Holidays will be processed the following business day. Next Day Service can be purchased for $50 and includes Saturday Delivery when applicable. Please see TERMS for more.
Products may be returned to Grand Seiko Boutique Online within 14 days of the delivery date. Option for a return and refund or exchange is possible when the watch is returned in new, unworn condition, with all original contents included in the package. Upon receiving your return, Grand Seiko will verify the condition of the watch. If there are any missing items, damage, or wear found, you may be subject to fees accordingly. Please be sure to remove any jewelry or other watches before trying on the watch to avoid damage. Please do not size the watch if you return it as it will not be considered new. Please contact the Grand Seiko Boutique Online team HERE to initiate a return. Please see the TERMS for more.
Warranty – All Grand Seiko watches come with a 5-year international warranty. Grand Seiko Boutiques and Grand Seiko Boutique Online provide an additional 1-year warranty at no additional charge for a total of 6 years coverage under the limited warranty. Please see the TERMS for more.
Email, Phone, and Live chat info:
Scheduled hours of operation are Mon-Fri 9am-6pm. However, Grand Seiko Boutique teams may be able to assist at other times depending on availability.
Email: boutique.online@grand-seiko.us.com
Phone: 888-300-8463
