Product Summary

Mechanical 3Days equipped with calendar function in a powerful case size up

In a case with a presence of 42 mm, this model is equipped with a self-winding mechanical large diameter movement "Caliber 9 S 68" with a convenient calendar function. 
While it is a large case size, by narrowing down the tip, we design it as a clean silhouette from either the front or the side. 
Also, a powerful, three-dimensional index harmonizes with the presence of the case, creating a balanced and stately face. A simple silver dial that makes you feel the identity of Grand Seiko raises visibility by suppressing radiation. 




Case material: Stainless steel case back: Stainless steel and sapphire glass
Glass material: Dual Curved Sapphire Glass
Coating: Inner nonreflective coating
Case size: Vertical 47.9 mm × width 42.0 mm × thickness 13.1 mm
Arm circumference length (longest): 205.0 mm


Movement: Caliber 9S68 Owner's Manual 
Drive system : Mechanical automatic winding (with manual winding)
Driving time: Maximum hoist lasts about 72 hours (about 3 days) lasts
accuracy : Static accuracy: Average day difference + 5 seconds to -3 seconds

Function · Specification

Crowd: One push three fold method
waterproof : Reinforced waterproof for everyday life (10 atm)
Magnetic resistance: There
weight : 173.0 g
Other: · Back cover lion with coat of arms · Screw back · Screw back · Screw lock type crown · Number of stones 35 · second hand stop function 

In actual products, the orientation of the back cover may differ for manufacturing reasons.



Grand Seiko SBGR307 9S Mechanical