Grand Seiko

Silken Sunray Pattern SBGA437

Reference Number :

SBGA437

Series : Heritage

Retail: $5,000

(As of: 01/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Grand Seiko. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThe SBGA437 is a captivating blend of heritage and cutting-edge horology. Its sunray dial is not just a face; it's a landscape of light, constantly shifting and surprising the eye. It's a nod to Shinshu's silken past, woven into the very fabric of the watch. The Spring Drive movement, Caliber 9R65, is a marvel of engineering. The way the seconds hand glides across the dial, it's hypnotic. No jarring ticks, just a serene sweep that captures the essence of time's ceaseless flow. Its 40mm stainless steel case, comfortable on the wrist and secured by a tri-fold clasp, feels reassuringly substantial and durable, a trusted companion through thick and thin. With the three-day power reserve, this watch isn't demanding constant attention. It sits on the wrist, a subtle reminder of the enduring craftsmanship and quiet confidence that defines Grand Seiko. The subtle details of the watch, especially the silken sunray pattern, make it a must-have for any serious collector. It is a beauty of a timepiece.

DescriptionThe Grand Seiko SBGA437, part of the esteemed Heritage Collection, exhibits an exceptional degree of craftsmanship and engineering precision. Its exterior case, constructed from high-grade stainless steel, measures 40.0mm in diameter and 46.6mm from lug to lug, with a total thickness of 12.3mm. The case back is a screw-down type, contributing to the watch's overall robustness. Protecting the dial is a dual-curved sapphire crystal, treated with an anti-reflective coating on the inner surface for enhanced visibility. The bracelet, also fashioned from stainless steel, features a 20mm width and utilizes a secure three-fold clasp with a convenient push-button release. It has a total circumference of 203mm. The watch maintains a water resistance rating of 10 bar, ensuring reliable performance under various environmental conditions. Additionally, it boasts a magnetic resistance of 4,800 A/m, further safeguarding the movement from potential disruption.

Powering the SBGA437 is the renowned Grand Seiko Spring Drive movement, Caliber 9R65. This sophisticated mechanism delivers an accuracy of ±15 seconds per month, which translates to approximately ±1 second per day. Upon reaching a full wind, the movement maintains an ample power reserve of roughly 72 hours, or three days. A discreet power reserve indicator, located adjacent to the eight o'clock index, allows the wearer to monitor the remaining energy stored within the mainspring. The dial itself, featuring the distinguishing "silken sunray pattern", pays homage to the Shinshu region's history of silk production. Created with a special method of silver plating, this application results in a subtle, radiating grain that subtly alters its appearance depending on the viewing angle. Within the movement, 30 meticulously placed jewels minimize friction, optimizing both efficiency and longevity. Further contributing to its functional design, the crown utilizes a screw-down mechanism, enhancing water resistance and offering an additional layer of protection.

GenderMen

SignaturesGrand Seiko

Country of OriginJapan

Case Size40 mm

MovementAutomatic

Caliber9R65

FunctionsHours, Minutes, Seconds, Date, Power Reserve

Power Reserve72 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal