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Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT
Grand Seiko GMT

Grand Seiko GMT

REF 9S66-00J0
#2026-111
Regular price €3.800,00

The Grand Seiko 9S66-00J0 is a refined automatic GMT watch, combining precise Japanese craftsmanship with understated, functional elegance.

  • Kit: Full Set (Box & Papers)
  • Year: 2025
  • Condition Used (Very good) The item shows minor signs of wear, such as small, intangible scratches.
  • Case Material: Steel | Bracelet Material: Steel
  • Diameter: 40 mm
  • 12 Months Warranty:
In addition to our authenticity guarantee, all our timepieces come with a comprehensive 12-month warranty provided by our accredited watchmaking experts. This ensures peace of mind and exceptional post-purchase care.
  • 14 Days Return:
We offer a 14-day return policy for all online purchases. If you're not completely satisfied, you can return your watch hassle-free. Our commitment is to ensure your satisfaction at every step.
  • Within Italy:
We offer fast and secure shipping across Italy. Your purchase will be delivered with care, ensuring it reaches you in perfect condition. Shipping prices will be determined in agreement with the Costantini team.
  • Outside Italy:
For international orders, shipping is handled securely and efficiently. Please note that local customs duties and taxes may apply as per the regulations of your country. Shipping prices will be confirmed with the Costantini team prior to finalizing your order.
GENERAL

Ref. Number 9S66-00J0
Brand Grand Seiko
Model GMT
Year 2025
Genere Unisex
Functions -
Additional Features
Condition Used (Very good) The item shows minor signs of wear, such as small, intangible scratches.

CALIBER

Movement Automatic
Movement/Caliber 9S66
Power reserve 72 h

CASE

Diameter 40 mm
Case Material Steel
Case Back Steel
Water Resistance 10 ATM
Bezel Material Steel
Crystal Sapphire
Dial Color Green
Dial Numerals

STRAP & CLOSURE

Bracelet Material Steel
Bracelet Color Steel
Closure Type Folding Clasp
Closure Material Steel

KIT

Original Box Yes
Original Papers Yes

Description

The Grand Seiko reference 9S66-00J0 exemplifies the brand’s philosophy of precision, legibility, and restrained design. Housed in a stainless steel case with clean, sharply defined lines, the watch reflects the meticulous finishing standards associated with Grand Seiko, including Zaratsu polishing. The dial — typically black or dark-toned depending on configuration — features applied hour markers, a GMT hand for tracking a second time zone, and a date aperture positioned at 3 o’clock for practical everyday use.

At its core is the automatic caliber 9S66, an in-house movement engineered for reliability and accuracy, offering independent adjustment of the local hour hand — a practical feature for travelers. Paired with a steel bracelet and secure folding clasp, the watch delivers both comfort and versatility. The overall aesthetic is discreet yet highly refined, making it suitable for both professional and casual settings.

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THE COMPANY

Costantini Watches was founded by Carlo Costantini, a passionate collector and connoisseur of fine timepieces. His journey began with a deep admiration for the craftsmanship and heritage of luxury watches, transforming his personal passion into a distinguished business.

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