Grand Seiko’s US boutique lists the Kodo Constant-Force Tourbillon SLGT003 at USD 350,000 and asks buyers to inquire about availability. That listing does not confirm current stock. At the watch’s 2022 launch, Grand Seiko listed a Japanese suggested retail price of ¥44,000,000, tax included, and an approximate European recommended retail price of €370,000. These are market- and date-specific reference prices, not directly comparable current global prices.
Grand Seiko Kodo SLGT003 price by market
| Market and source | Price | What the figure represents |
|---|---|---|
| United States — Grand Seiko Official Boutique US | USD 350,000 | Displayed boutique listing; the page requests an availability inquiry and does not confirm live inventory. Accessed October 5, 2026. |
| Japan — Grand Seiko / Seiko Watch Corporation | ¥44,000,000 | Suggested retail price, tax included, in the March 30, 2022 launch release. |
| Europe — Grand Seiko | Approximately €370,000 | Recommended retail price stated in the March 30, 2022 English launch release. |
The US page’s price is a currently displayed listing, while the Japan and Europe figures are launch references from 2022. The available official information does not establish a current Japanese or European price, a confirmed US delivery, or a secondary-market transaction value.
Is the SLGT003 available?
The US boutique product page says “Please Inquire About Availability.” That is an invitation to contact the boutique, not evidence that a watch is currently in stock. Grand Seiko and the US boutique identify the SLGT003 as a global limited edition of 20; that is the edition size, not a count of pieces remaining for sale.
What the Kodo SLGT003 is
The SLGT003 is Grand Seiko’s Kodo Constant-Force Tourbillon, powered by manually wound Caliber 9ST1. Its defining feature is the integration of a tourbillon and a constant-force mechanism into one unit on a single axis. Grand Seiko calls the watch Kodo, meaning “heartbeat” in Japanese, linking the name to the motion and sound of the mechanism.
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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)
Grand Seiko’s launch release described the arrangement as unprecedented for the brand and said it was the first time in horological history that a tourbillon and constant-force mechanism had been combined as one unit on a single axis. That is the manufacturer’s own claim, rather than an independent industry consensus.
Caliber 9ST1: accuracy and power reserve
- Winding and construction: manual winding, 44 jewels and a frequency of 28,800 vibrations per hour, or 8 beats per second.
- Power reserve: stated at 72 hours overall; the constant-force mechanism is specified to operate for 50 hours.
- Accuracy: +5 to −3 seconds per day under static test conditions. This is a manufacturer specification under those conditions, not a guarantee of everyday-wear accuracy.
Grand Seiko says each Caliber 9ST1 receives a 34-day accuracy evaluation across six positions and three temperatures. The movement is fully wound every 48 hours during that manufacturer-described test.
Rank #2
- Featuring a Black Band, Silver-tone Case, Scratch Resistant Hardlex Crystal
- Box-shaped Hardlex crystal
- Second hand halt mechanism (Hacking)
Case, materials and included straps
| Specification | SLGT003 detail |
|---|---|
| Case diameter and thickness | 43.8 mm diameter; 12.9 mm thick. |
| Case length and lug width | 50.6 mm case length; 22 mm lug width, as listed by the US boutique. |
| Case materials | Platinum 950 inner case and Brilliant Hard Titanium outer case. |
| Crystal and case back | Box-shaped sapphire crystal; transparent case back. |
| Water and magnetic resistance | 10-bar water resistance; 4,800 A/m magnetic resistance. |
| Straps and clasp | Himeji Kurozan calf strap, platinum 950 clasp and an additional double-sided crocodile strap. |
Award
On November 11, 2022, Grand Seiko announced that the SLGT003 had won the Chronometry Prize at the 2022 Grand Prix d’Horlogerie de Genève, a prize the brand described as recognizing high-precision timekeeping. Grand Seiko’s award announcement.
Quick Recap
Rank #3
- STUNNING BLUE DIAL: this automatic men's watch features a deep blue, pressed pattern and gloss finish surrounded by a 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: features a durable stainless steel watch case and bracelet with see through caseback
- 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
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.
