Grand Seiko SBGR317

Features

An automatic mechanical in a new 40mm case design

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.

Specifications

Exterior

Exterior: Stainless steel

Case back: See-through & Screw case back

Glass Material: Dual-curved sapphire crystal

Glass Coating: Anti-reflective coating on inner surface

Case size: Diameter 40.0mm

Lug-to-lug 46.6mm

Thickness 13.0mm

Band width: 20mm

Clasp type: Three-fold clasp with push button release

The perimeter of Band: 195mm

Movement

Caliber no.: 9S65 Instructions

‍Movement Type: Automatic with manual winding

Power reserve: Approx. 72 hours (3 days)

Mean daily rate: +5 to -3 seconds per day

• Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.

Functions

Water resistance: 10 bar

Magnetic resistance: 4,800 A/m

Other details / Features:

• Screw-down crown
• 35 jewels