GS Grand Seiko SBGR305

GS Grand Seiko SBGR305

GS Grand Seiko SBGR305

The modern re-interpretation of the first Grand Seiko

While inheriting the ethos of the first Grand Seiko created in 1960, this contemporary model features an advanced design, new materials, and the Caliber 9S68 large-diameter mechanical movement. While the case width is slighter larger at 40.5 mm, its design belies its actual diameter and makes it feel slimmer. It is made from brilliant hard titanium, a beautiful and resilient new material. It is finished with our Zaratsu polishing technique, which gives the finish a unique brightness that conventional pure titanium lacks.

The Grand Seiko logo at the 12 o’clock position is pressure-embossed.

The watch has an exhibition case back made of sapphire, through which the 9S68 movement and its high quality finish can be enjoyed, proving perhaps that it is possible to both respect and re-invent even the finest of traditions.


Product Description

Case : Brilliant hard titanium
Glass : High definition dual-curved sapphire crystal
Coating : Anti-reflection coating on inner surface
Case size : Diameter 40.5mm×Thickness 13.6mm
Band : Crocodile

Movement : Caliber 9S68
Driving system : Automatic with manual winding mechanism
Power reserve : Approximately 72 hours
Accuracy : -3 to 5 seconds (when static)

Clasp : Three-fold clasp with push button release in stainless steel
Water resistance : 10 bar
Magnetic resistance : 4800 A/m (60 gauss)