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Collections Masterpiece Collection Kodo Constant Force Tourbillon SLGT005
Grand Seiko SLGT005 constant force tourbillon watch
Grand Seiko SLGT005 constant force tourbillon watch
Grand Seiko SLGT005 constant force tourbillon watch

Kodo Constant Force Tourbillon SLGT005

Grand Seiko Masterpiece Collection
USD $365,000
Boutique Limited Edition of 20
Please Inquire About Availability


SLGT005 Kodo - the other side of light and shadow

Introducing the Kodo Constant Force Tourbillon SLTG005 from Grand Seiko, the latest chapter in our legacy of precision and innovation.

Crafted with the same groundbreaking technology that earned the SLTG003 universal acclaim, the SLTG005 continues to push the boundaries of watchmaking. Its unique blend of a tourbillon and constant-force mechanism on a single axis ensures unparalleled accuracy and performance.

Where the original Kodo evoked the enchanting twilight, this new rendition celebrates the serene beauty of daybreak with its silver-toned movement components, casting a radiant yet refined glow. The inclusion of blue sapphires in the watch's jewels, a first for Grand Seiko, mirrors the ethereal hues of dawn. Employing Platinum 950 for the inner case and Brilliant Hard Titanium for the outer case establishes a resilient yet visually striking dichotomy, complemented by select components Zaratsu polished to achieve a flawlessly reflective surface.

The inner tourbillon carriage completes a full rotation every 60 seconds, synchronized with the balance's eight beats per second. Simultaneously, the outer constant-force carriage moves precisely at one-second intervals. This orchestration results in a harmonious blend of the active escapement and the constant-force mechanism, akin to the rhythmic pulse of a reassuring heartbeat (Kodo is Japanese for heartbeat). This symphony of movements, reminiscent of a musical 16th note, serves as the inspiration behind its name.

The absence of intermediary components between the tourbillon and constant force mechanism ensures consistent torque transmission to the balance wheel, resulting in a stable 50-hour duration for the constant force mechanism and improved balance amplitude for enhanced movement accuracy. Caliber 9ST1 redefines accuracy and undergoes a thorough 34-day testing period, with individual performance documented in a certificate accompanying every watch.

The SLGT005 features a leather strap meticulously crafted from a resilient material, treated using traditional techniques reminiscent of those employed in crafting samurai armor. An exclusive white hue, specially developed for this timepiece, is achieved through natural tanning methods and hand-coated with layers of white urushi lacquer, resulting in a rich sheen and unique texture. A charcoal grey crocodile strap is also provided with the watch.

Case Material : Platinum 950 and Brilliant Hard Titanium
Case Diameter : 43.8mm
Case Thickness : 12.9mm
Case Length : 50.6mm
Lug Width : 22mm
Crown : Push Crown
Strap/Bracelet : Kurozan Leather Strap and Dual-Side Crocodile Leather Strap
Crystal : Box-Shape Sapphire
Special : Boutique Limited Edition of 20
Caliber : 9ST1
Type : Mechanical
Power Source : Manual Winding
Jewels : 44
Accuracy : +5 to -3 seconds per day
Duration : 72 Hours
Features : Time, Power Reserve Indicator, Tourbillon, Constant Force
Water Resistance : 100m
Magnetic Resistance : 4,800 A/m
Grand Seiko’s Boutique Online Services
Free 2-3 Day Shipping
2-Week Returns & Exchanges
Exclusive 6-Year Warranty
Customer Support
Kodo SLGT005 against sky background.
Kodo SLGT005
A concept movement like no other brought to life.
Grand Seiko SLGT005 Kodo.
Kodo SLGT005
Caliber 9ST1 is the world's first constant force tourbillon as one unit on a single axis.
Grand Seiko SLGT005 Kodo.
Kodo SLGT005
The intricate case is constructed from Platinum 950 for the inner case and Brilliant Hard Titanium for the outer case.
Grand Seiko Kodo SLGT005.
Kodo SLGT005
An extra charcoal grey crocodile strap is also provided with the watch.
Kodo SLGT005 against sky background.
Grand Seiko SLGT005 Kodo.
Grand Seiko SLGT005 Kodo.
Grand Seiko Kodo SLGT005.
Free 2-3 Day Shipping

Free shipping is 2-3 business days via Fed Ex Signature Required. Orders placed before 2 pm ET are generally processed and shipped on the same business day, and orders placed after 2 pm ship the following business day. Orders are processed Monday – Friday, and orders placed on Holidays will be processed the following business day. Next Day Service can be purchased for $50 and includes Saturday Delivery when applicable. Please see TERMS for more.

2-Week Returns and Exchanges

Products may be returned to Grand Seiko Boutique Online within 14 days of the delivery date. Option for a return and refund or exchange is possible when the watch is returned in new, unworn condition, with all original contents included in the package. Upon receiving your return, Grand Seiko will verify the condition of the watch. If there are any missing items, damage, or wear found, you may be subject to fees accordingly. Please be sure to remove any jewelry or other watches before trying on the watch to avoid damage.  Please do not size the watch if you return it as it will not be considered new. Please contact the Grand Seiko Boutique Online team HERE to initiate a return. Please see the TERMS for more.

Exclusive 6-Year Warranty

Warranty – All Grand Seiko watches come with a 5-year international warranty. Grand Seiko Boutiques and Grand Seiko Boutique Online provide an additional 1-year warranty at no additional charge for a total of 6 years coverage under the limited warranty. Please see the TERMS for more.

Customer Support

Email, Phone, and Live chat info:

Scheduled hours of operation are Mon-Fri 9am-6pm. However, Grand Seiko Boutique teams may be able to assist at other times depending on availability.

Email: boutique.online@grand-seiko.us.com 

Phone: 888-300-8463