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The Grand Seiko SBGC275 is a 2024 Sport Collection limited edition combining a Spring Drive chronograph and GMT with a color-shifting dial inspired by sunrise over Japan’s Hotaka range. Grand Seiko announced 700 watches, a 72-hour power reserve and accuracy of ±10 seconds per month for its specially adjusted Caliber 9R96.
What is the Grand Seiko SBGC275?
Grand Seiko announced the SBGC275 on April 9, 2024, as the Sport Collection Caliber 9R 20th Anniversary Limited Edition. It celebrates 20 years of the 9R Spring Drive series. The brand said the watch would reach Grand Seiko Boutiques and select retail partners worldwide in July 2024, with production limited to 700. Grand Seiko’s launch announcement identifies it as a Spring Drive Chronograph GMT.
What makes the dial distinctive?
Grand Seiko says the dial draws on summer sunrise light across the Hotaka mountain range in Shinshu, central Japan, shifting visually from pink toward orange. Its Optical Multilayer Coating process uses physical vapor deposition and layers of nanoscale film; the company says the resulting hue changes with the viewing angle. The dial also has a texture Grand Seiko describes as a lion’s-mane pattern. The brand connects the angular case and claw-like lugs to the same lion-inspired design language.
This is an angle-dependent color effect, rather than a single fixed color description. Grand Seiko’s launch release explains: “Several layers of nanoscale film create an effect in which the dial exhibits a different hue depending on the angle of view.”
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What does Caliber 9R96 do?
Caliber 9R96 is an automatically wound Spring Drive movement. It combines timekeeping with a GMT hand and a chronograph capable of timing up to 12 hours. The official boutique page also lists a date, power reserve indicator, stopwatch and independent hour hand.
- Accuracy: Grand Seiko states ±10 seconds per month, or ±0.5 seconds per day. The company describes 9R96 as a specially adjusted version of Caliber 9R86, for which the release gives ±15 seconds per month.
- Power reserve: 72 hours when fully wound.
- Jewels: 50.
These are manufacturer specifications, not independent performance-test results. The figures and functions are listed in the launch announcement and the Grand Seiko Boutique product listing.
SBGC275 specifications
| Specification | SBGC275 |
|---|---|
| Collection and edition | Sport Collection; 9R Spring Drive 20th Anniversary limited edition |
| Announced production | 700 watches |
| Movement | Spring Drive Caliber 9R96; automatic winding; 50 jewels |
| Functions | Time, date, GMT, chronograph up to 12 hours, power reserve indicator; independent hour hand listed by the boutique |
| Accuracy | Grand Seiko-stated ±10 seconds per month, or ±0.5 seconds per day |
| Power reserve | 72 hours |
| Case and bracelet | High-intensity titanium |
| Case diameter | 44.5 mm |
| Case thickness | 16.8 mm |
| Case length | 50 mm, according to the boutique listing |
| Lug width | 23 mm, according to the boutique listing |
| Water resistance | 20 bar |
| Magnetic resistance | 4,800 A/m |
| Crystal and case back | Dual-curved sapphire crystal with anti-reflective coating; see-through screw case back |
| Crown and clasp | Screw-down crown; three-fold clasp with push-button release, secure lock and extender |
Dimensions and construction details come from Grand Seiko’s release and boutique listing. Grand Seiko says its high-intensity titanium is about 30% lighter than stainless steel; that is the manufacturer’s comparison, not an independently measured result.
How much did the SBGC275 cost, and is it still available?
Grand Seiko’s April 2024 release gave an approximate US recommended retail price of $13,400 at launch. The official US boutique page currently displays $13,400 and labels the model “No Longer Available.” That listing status applies to the boutique page; it does not establish whether any retailer has stock or what the watch currently sells for on the secondary market.
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- Comes with individual box
- 24 hour hand (dual time display function)
- Day difference + 45 to -35 seconds
- Mechanical automatic movement (with hand winding)
- Lasts approximately 41 hours on maximum winding
Grand Seiko’s price-adjustment notice effective November 1, 2024 does not list the SBGC275, so it provides no revised price for this reference. The launch release says its price and specifications were as of publication and subject to change. See the April 2024 announcement, current boutique listing and November 2024 price-adjustment notice.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the specifications mean for the watch
The SBGC275 puts a chronograph, GMT and date on a 44.5 mm-wide case that is 16.8 mm thick. Those dimensions are useful to compare with a watch that fits you; they do not by themselves establish how it will wear on a particular wrist. Its 20-bar water-resistance rating, titanium construction and screw-down crown are specified by Grand Seiko, while the GMT and chronograph add timing and time-zone functions to the Spring Drive platform.
For a meaningful comparison with another chronograph GMT, consider case width and thickness alongside material, movement accuracy and power reserve, water resistance, how the GMT and chronograph operate, dial legibility, edition size, and the other watch’s price and availability. The SBGC275’s color-changing dial is a design feature described by Grand Seiko; whether its display is easy to read in a given setting is not established by the published specifications.
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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.
