Grand Seiko - SBGJ239

Case Material

Stainless Steel

Glass Material

Dual-curved sapphire crystal

Glass Coating

Anti-reflective coating on inner surface

Lumi Brite

LumiBrite on hands, index(es) and bezel

Case size

Diameter 44.2 mm

Thickness 14.4 mm

Lug-to-lug 50.6 mm

Band Material

Crocodile Leather

Clasp Type

Three-fold clasp with push button release

Caliber no.

9S86

Movement Type

Automatic with manual winding

Power Reserve

Approx. 55 hours

Accuracy

+5 to -3 seconds per day (when static) / +8 to -1 seconds per day (Normal Usage Accuracy:)