Grand Seiko - SBGA231

Case Material

High-intensity titanium

Glass Material

Sapphire crystal

Glass Coating

Anti-reflective coating on inner surface

Lumi Brite

Lumibrite on hands and index(es)

Case size

Diameter 44.2 mm

Thickness 14 mm

Lug-to-lug 51 mm

Band Material

High-intensity titianium

The Perimeter of Band

196 mm

Clasp Type

Three-fold clasp with secure lock & push button release, solid & slide adjuster

Caliber no.

9R65

Movement Type

Spring Drive

Power Reserve

Approx. 72 hours (3 days)

Accuracy

±15 seconds per month (±1 second per day)