NEW

SBGA231

[ 9R Spring Drive ]

  • FEATURES
  • SPECIFICATIONS

FEATURES

A Spring Drive Powered Diver's Watch

This diver’s watch is powered by Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch.

The case and band are made with high-intensity titanium, providing a scratch and corrosion resistant finish with a 137g weight reduction, making it 30% lighter than stainless steel and a pleasure to wear.

The watch is water resistant to a depth of 200 meters and utilizes LumiBrite for increased visibility of the hands and index. Designed for use in some of the most unforgiving environments, the rotating bezel is removable for simple maintenance while the area around the crown has been crafted to ensure that residue from dirt, sand, or seawater can be easily washed off.
With a mirror-finished case achieved through Zaratsu polishing, a lustrous rotating bezel, and multi-faceted cut indices, this watch is unmistakably Grand Seiko in its appearance, high specifications and durability.

SPECIFICATIONS

Case
Case : High-intensity titanium
Glass : Sapphire crystal
Coating : Anti-reflection coating on inner surface
Lumi Brite : Hands and markers
Case size : Diameter 44.2mm×Thickness 14.0mm
The perimeter of bracelet : 196.0mm
Band : and ceramic
Movement
Movement : Caliber 9R65    Instructions
Driving system : Spring Drive
Power reserve : Approximately 72 hours
Accuracy : ±1 seconds per day (±15 seconds per month)
Functions/Specifications
Clasp : Three-fold clasp with push button release
Water resistance : Water resistance for air diving 200m
Magnetic resistance : 4800 A/m (60 gauss)
Weight : 137.0 g
Remarks : Screw down crown
Screw back
Jewels: 30
Power reserve display function
The unidirectional rotating bezel
Caseback with a lion emblem