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Collections Heritage Collection Spring Drive SBGA439
Spring Drive SBGA439
Spring Drive SBGA439
Spring Drive SBGA439
Spring Drive SBGA439

Spring Drive SBGA439

Grand Seiko Heritage Collection
USD $4,800
Mastershop Model
Ships by February 15th 2022

Features

A classic interpretation of the Grand Seiko Style with a midnight blue sunray dial

The moonlit sky at night has a tantalizing and ever-changing hue, which is captured perfectly in the midnight blue sunray dial of SBGA439. Highly dynamic, the color goes between the warmth of the blue in some light to pitch black in others.

Measuring 40mm in diameter by 12.3mm in thickness, the stainless steel embodies the contemporary interpretation of the Grand Seiko Style. The case is rated to 10 bar, and a solid case back protects the movement within.

SBGA439 is powered by Spring Drive caliber 9R65, which is hand assembled by the skilled craftsmen and women of the Shinshu Watch Studio. Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.

Case
Case Material : Stainless Steel
Case Diameter : 40mm
Case Thickness : 12.3mm
Case Length : 46.6mm
Lug Width : 20mm
Crown : Screw Down
Strap/Bracelet : Stainless Steel w. three-fold clasp
Crystal : Dual Curve Sapphire
Caseback : Stainless Steel
Movement
Caliber : 9R65
Type : Spring Drive
Power Source : Automatic
Jewels : 30
Accuracy : ±1 second per day / ±15 seconds per month (average)
Duration : 72 Hours
Functions
Features : Time, Date, Power Reserve Indicator
Water Resistance : 100m
Magnetic Resistance : 4,800 A/m
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