Grand Seiko

Kodo Constant-force Tourbillon SLGT005

Reference Number :

SLGT005

Series : Masterpiece

Retail: $365,000

(As of: 01/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Grand Seiko. If you are interested in selling this watch to us, you can contact us here.

Quick TakeThe Grand Seiko Kodo SLGT005 is a symphony of light and mechanics, a true horological masterpiece. This isn't just a watch; it's a wearable piece of art, where the dance of the tourbillon and constant-force mechanism on a single axis is a mesmerizing ballet. The cool silver tones of the movement, accented by the unexpected sparkle of pale blue sapphires, evoke the ethereal beauty of daybreak. The blend of platinum and Brilliant Hard Titanium in the case isn't just about durability; it's a textural poem, a subtle gradient that speaks to the meticulous craftsmanship at play. Each glance at this timepiece is a reminder of the dedication and precision that define Grand Seiko's approach to watchmaking. It's a piece that transcends mere timekeeping, inviting you into a world where engineering and artistry converge in perfect harmony. This watch is an experience, a statement of refined taste, and a nod to the wearer's appreciation for the finer things in life. This limited edition watch was awarded the Chronometry Prize at the 2022 Grand Prix d'Horlogerie de Geneve.

DescriptionThe Grand Seiko Kodo Constant-force Tourbillon SLGT005 is a manual winding watch with a 9ST1 caliber movement that operates at 28,800 vibrations per hour, equating to 8 beats per second. It delivers a power reserve of approximately 72 hours, with the constant-force mechanism maintaining operation for 50 hours. With a mean daily rate of +5 to -3 seconds per day, this timepiece demonstrates remarkable precision, with its accuracy in normal use between +5 to -1 seconds per day. Its case, measuring 43.8mm in diameter, 50.6mm lug-to-lug, and 12.9mm in thickness, is constructed from a combination of Platinum 950 and Brilliant Hard Titanium. The inner case is made of Platinum 950, while the outer case utilizes Brilliant Hard Titanium, an alloy that is twice as hard as stainless steel. This combination provides a visually appealing gradation and ensures durability. The case features a see-through, screw-down case back made of platinum and sapphire crystal, which showcases the intricate 9ST1 movement.

Visually, the watch presents a theme of daybreak, using light and shadow to evoke the transition from night to morning. It's fitted with a box-shaped sapphire crystal with an anti-reflective coating on the inner surface, ensuring clear visibility of the dial. The watch features a power reserve indicator and has a water resistance of 10 bar, suitable for everyday wear. Its magnetic resistance is rated at 4,800 A/m, protecting the movement from common magnetic fields. The dial also features blue sapphires in place of some rubies, aligning with the dawn theme and offering a unique aesthetic. The watch is paired with a 22mm wide calfskin strap, treated using a traditional Japanese method once used for samurai armor. This particular strap is white, tanned with natural materials, and coated with white urushi lacquer for a unique texture and sheen. An additional charcoal grey crocodile strap is also included. This limited edition watch is marked with "LIMITED EDITION" and a serial number on the case back.

GenderMen

SignaturesGrand Seiko

Country of OriginJapan

Case Size43.8 mm

MovementHandwound

Caliber9ST1

FunctionsHours, Minutes, Tourbillon, Power Reserve

Power Reserve72 Hours

Case MaterialsTitanium, Platinum

Bezel MaterialsTitanium, Platinum

Lug MaterialsTitanium, Platinum

Case BackSapphire Crystal