Grand Seiko Heritage Collection SBGR317 MADE IN JAPAN JDM (Japanese Domestic Market)

A black dial gives a more compact look. The strong three-dimensional indexes are tightly arranged to the outside of the calendar frame, creating harmony with the presence of the case, balance and a stately profile. The case design has a sense of presence and luxury following the standard design of Grand Seiko. 

The caliber 9S65 "Mechanical automatic winding 3 Days" lasts 72 hours at maximum winding, adopting the latest hydraulic spring and escapement (MEXT) by MEMS method, creating greater stability and improved accuracy. The back of the see-through case, allows the owner to enjoy the precise movement. 

This model combines the presence and wearability in a well-balanced manner with high legibility. This model can endure generations as a lifetime timepiece that carves important moments together.

Exterior

Case Material :	Stainless steel
Glass Material :	Dual-curved sapphire
Glass Coating :	Anti-reflective coating on inner surface
Case size :	Diameter 40mm × Thickness 13mm
The perimeter of Band :	195mm
Clasp type :	Three-fold clasp with push button release

 

Functions

Water resistance :	10 bar
Magnetic resistance :	Equipped
Other details / Features :	35 jewels Case back with lion emblem Date display Screw case back Screw-down crown See-through case back Stop seconds hand function

 

Movement

Caliber no. :	9S65
Movement Type :	Automatic with manual winding capacity
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)