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At a glance: what differs and what does not
| Reference | Dial and inspiration | U.S. access | Shared core specifications |
|---|---|---|---|
| SBGW309 | Blue; evokes juhyo, or “snow monsters,” the wind-blown, ice-covered trees seen in Iwate Prefecture. | U.S. GS9 Club members only, through the online store and GS9 Club events. | 36.5 mm stainless-steel case; hand-wound Caliber 9S64; approximately 72-hour power reserve. |
| SBGW311 | Green; inspired by Tsuyu, Japan’s rainy season, and greenery around Mt. Iwate. | U.S. exclusive. | 36.5 mm stainless-steel case; hand-wound Caliber 9S64; approximately 72-hour power reserve. |
| SBGW313 | Pink; inspired by Hanami, cherry-blossom viewing, and the spring landscape around Mt. Iwate. | U.S. exclusive. | 36.5 mm stainless-steel case; hand-wound Caliber 9S64; approximately 72-hour power reserve. |
All three references have a box-shaped sapphire crystal, a steel bracelet with a three-fold push-button clasp, and 100 m water resistance. Their case dimensions, movement, and published movement figures are alike, so the practical choice is primarily about which dial you prefer and whether you meet the relevant access restriction. SBGW309 specifications, SBGW311 specifications, SBGW313 specifications.
How the three dials differ
SBGW309: blue juhyo dial
The SBGW309’s blue dial draws on juhyo—trees coated and shaped by winter winds and ice in Iwate Prefecture. It is the most winter-focused of the trio. Its U.S. GS9 Club membership restriction is a separate distinction from the dial design: this is not simply a generally available U.S. exclusive.
SBGW311: green Tsuyu dial
The SBGW311 uses green to evoke Tsuyu, Japan’s rainy season, and the surrounding greenery of Mt. Iwate. It is identified as a U.S. exclusive, rather than a GS9 Club-members-only model.
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- Calendar-linked time difference adjustment function
- Movement Caliber 9S86,
- Dual-curved sapphire crystal
SBGW313: pink Hanami dial
The SBGW313’s pink dial references Hanami, the custom of viewing cherry blossoms, and the spring landscape around Mt. Iwate. Like the SBGW311, it is a U.S. exclusive.
Shared case, bracelet and movement
Each watch measures 36.5 mm in diameter, 11.6 mm thick and 42.7 mm from lug to lug, with an 18 mm lug width. The case is stainless steel, the crystal is box-shaped sapphire, and the bracelet is steel with a three-fold push-button clasp. Grand Seiko places the trio in its modern 44GS-style family; the brand says the original 44GS, released in 1967, first defined the Grand Seiko Style and that the design has evolved into a contemporary interpretation. SBGW309, SBGW311, SBGW313.
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- Three-fold clasp with push button release
- Dual-curved sapphire crystal
- Power reserve display on the back
- Power resrve Approx. 72 hours(3 days)
All three are powered by the manually wound Caliber 9S64. Grand Seiko specifies 24 jewels, a frequency of 28,800 vibrations per hour (8 beats per second), and approximately 72 hours of power reserve. These shared specifications do not distinguish one reference from another. The manufacturer’s 9S64 movement page lists both a mean daily rate and an accuracy range for normal use; they describe different conditions.
What the 9S64 accuracy figures mean
Grand Seiko states a mean daily rate of +5 to -3 seconds per day for the 9S64. That is a controlled-test figure, not a promise that every watch will gain or lose within those limits on a wearer’s wrist: the movement is tested before casing, in six positions, under an artificially controlled environment over 12 days. For normal usage, Grand Seiko gives a broader accuracy specification of +10 to -1 seconds per day. Actual results can vary with wearing conditions and other factors; neither number makes one of these three references more accurate than the others.
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- See-through case back
- Date display
- Screw-down crown
- 40mm Diameter
- Weight 178.0 g
U.S. exclusivity, launch pricing and checking availability
The access rules differ by reference. The SBGW309 is described by Grand Seiko as a U.S. GS9 Club exclusive, offered to members through the online store and GS9 Club events. The SBGW311 and SBGW313 are labeled U.S. exclusives. Grand Seiko’s GS9 overview said the models became available in November 2023 through Grand Seiko boutiques, the boutique online store and authorized retailers; that launch information does not establish present stock. Grand Seiko GS9 Club overview.
Prices and stock can change. The GS9 overview listed an original U.S. retail price of $5,900 for each model. At the time the official pages were checked, the SBGW309 page displayed $6,200, while the SBGW311 page displayed $5,900 and “Out of Stock.” These are page observations, not a complete account of current pricing or inventory: the SBGW313’s current stock and availability across authorized retailers were not established.
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- BURGUNDY DIAL: this men's automatic watch features a burgundy deep, pressed pattern with a gloss finish and rose gold stainless steel watch case
- AUTOMATIC: these self-winding, automatic men's watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL & LEATHER: features a durable rose gold-finish stainless steel watch case paired with a brown leather watch band
- WATER-RESISTANT: these men's wrist watches are water-resistant down to 50 meters
- 4R35 CALIBER: equipped with the reliable caliber 4R35 automatic movement, this accurate men's watch keeps precise time
- For the SBGW309, confirm GS9 Club eligibility and check the official boutique or event availability.
- For the SBGW311 or SBGW313, check the official boutique and an authorized retailer directly; a U.S.-exclusive label does not guarantee that a particular seller has one in stock.
- Before buying from a third-party marketplace, verify the exact reference and the seller’s status. No marketplace listing or seller authorization is established here.
Which reference makes sense for you?
- Choose the SBGW309 if you want the blue winter-inspired dial and qualify for its GS9 Club-only U.S. access.
- Choose the SBGW311 if the green rainy-season dial is the one you prefer and you are looking for the U.S.-exclusive version.
- Choose the SBGW313 if you prefer the pink cherry-blossom reference and its spring theme.
Since the dimensions, bracelet, water resistance and movement are shared, fit and core specifications do not provide a meaningful distinction between these three. All have an 18 mm lug width, but that measurement alone does not confirm compatibility with any particular aftermarket strap, end link, spring bar or clasp; verify the specific accessory’s fit before ordering.
Quick Recap
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- OPEN-APERTURE DIAL: this men's automatic watch features a black dial with 24-hour subdial and LumiBrite hands, with a retro watch feel inspired by the 1964 Crown Chronograph
- AUTOMATIC: these self-winding, automatic men's watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable stainless steel watch case, black bezel, and stainless steel watch band
- WATER-RESISTANT: these men's wrist watches are water-resistant down to 50 meters
- 4R39 CALIBER: equipped with the reliable caliber 4R39 automatic movement, this accurate men's watch keeps precise time
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
