Grand Seiko Heritage "Kiri" 36.5mm
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In 1967, the 44GS introduced the design language that would define Grand Seiko’s aesthetic for decades. The SBGW323 offers a refined, modern interpretation of this legacy, pairing the iconic 44GS case with a mid-sized 36.5mm silhouette. Its dial features the classic Mt. Iwate pattern in a striking purple hue, inspired by the kiri, the official flower of Iwate Prefecture—home to the Grand Seiko Studio Shizukuishi. This elegant timepiece blends heritage, craftsmanship, and subtle beauty in a perfectly balanced form.
Grand Seiko Watch Warranty
The period of the Grand Seiko worldwide warranty is five years from the date of purchase.
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Shipping & Returns
Free FEDEX overnight shipping on all Grand Seiko watches. Our return policy is 10 days for your money back, or 30 days to exchange.
Technical information about this watch
Grand Seiko Heritage "Kiri" 36.5mm

100M / 10 ATM water resistance
Water resistance indicates a watch's ability to withstand moisture and water. Ratings are measured in metres (M) or atmospheres (ATM). For instance, 30M (3 ATM) is suitable for light splashes, while 100M (10 ATM) and above are ideal for swimming and diving. Regular maintenance helps retain water resistance over time.

GS Calibre 9S64 Manual winding

36mm case size
Case size, measured in millimetres (mm), impacts the watch's look and fit. Men's watches typically range from 38mm to 46mm, and women's from 26mm to 36mm. Larger cases make a bold statement, while smaller cases offer a classic look. Choosing the right size ensures comfort and style.

72 hours power reserve
Power reserve is the duration a watch runs on a full wind or charge. Mechanical watches usually offer 40 to 80 hours, with some extending to several days. Quartz watches, powered by batteries, last several years. Knowing the power reserve helps maintain accurate timekeeping.
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