Grand Seiko Sport Collection SBGE257G

The rich fecundity of nature in Japan is central to the inspiration of many Grand Seiko designs. SBGE257, for example, has a dial whose color echoes the rich green of one of the 2,000 types of moss that can be found in Japan. There is something eternal about the moss that thrives at the base of trees or on garden stones, which is why it is so often used in Bonsai create the sense that time passes inexorably onwards. This sense is enhanced by the glide motion of the Spring Drive seconds hand as it moves continuously and silently across the dial.

A Spring Drive GMT for the next generation

Equipped with a GMT hand, this watch features Grand Seikos unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch. Housed in a water-resistant stainless steel case with ceramic bezel, a 24-hour GMT hand and Lumibrite indices for exceptional precision and legibility complemented by the smooth motion glide of Spring Drive.

Exterior
Exterior: Stainless steel with ceramic bezel
Case back: Screw case back
Glass Material: Dual-curved sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
LumiBrite: LumiBrite on hands and index(es)
Case size: Diameter 40.5mm Lug-to-lug 48.7mm Thickness 14.7mm
Band width: 20mm
Clasp type: Three-fold clasp with push button release

Movement
Caliber no.: 9R66 Instructions
Movement Type: Spring Drive
Power reserve: Approx. 72 hours(3 days)
Accuracy: 15 seconds per month (1 second per day)

Functions
Water resistance: 20 bar
Magnetic resistance: 4,800 A/m
Weight: 172 g
Other details / Features:
Screw-down crown
30 jewels
24-hour hand (dual time display function)
Power reserve indicator
Calendar-linked time difference adjustment function

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