Grand Seiko SBGW231

A 3-day power reserve with lasting quality

The watch has a 3-day power reserve and combines the latest in
hairspring technology with an escapement developed through the MEMS
technology to achieve high accuracy and stability when worn.
The delicacy, strength and beauty of the movement can be enjoyed the exhibition case back.

SPECIFICATIONS

Exterior

Case Material: Stainless steel

Glass Material: Box shaped sapphire crystal

Glass Coating: Anti-reflective coating on inner surface

Case size: Diameter 37.3mm × Thickness 11.6mm

Band Material: Crocodile leather

Movement Caliber no.: 9S64 Instructions

‍Movement Type: Mechanical manual winding

Power reserve: Approx. 72 hours (3 days)

Accuracy: +5 to -3 seconds per day (when static) / +10 to -1 seconds per day (normal usage accuracy)

Functions

Water resistance: Splash Resistant

Magnetic resistance: Equipped

Weight: 61.0 g

Other details / Features:

• ・24 jewels
• ・Case back with 6 screws
• ・Case back with lion emblem
• ・See-through case back
• ・Stop seconds hand function