Grand Seiko Heritage Collection Hi Beat Automatic 40.2 MM SS Watch SBGH201

A complete and beautifully formed Mechanical Hi-Beat 36000

In 1968, Grand Seiko introduced Japan’s first automatic 10-beat watch (61GS) to the world.

In 2009, 10-beat Calibre 9S85 surpassed the original, with high precision parts created using sophisticated modern technology assembled with skills honed over the many decades of Grand Seiko’s watchmaking.

Innovations to the precision controlling mainspring, the hairspring, and the escapement mean that the 9S Mechanical is not simply a revival of the 10-beat movement of the past, but an entirely new incarnation of this high-precision movement.

The movement is ensconced in a beautiful case with the stunning blue second hand contrasting with the white dial as it etches out precise time. In every detail, it is faithful to the ‘Grand Seiko Style’, the embodiment of the Grand Seiko design philosophy which started with the 44GS.

The delicacy, strength and beauty of the movement can be enjoyed the exhibition case back.

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 40.2mm Lug-to-lug 47.6mm Thickness 13.0mm

Band width:    20mm

Clasp type:      Three-fold clasp with push button release

The perimeter of Band:          195mm

Movement

Caliber no.:     9S85 Instructions

Movement Type:        Automatic with manual winding

Power reserve:           Approx. 55 hours

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

Weight:           151 g

Other details / Features:       

Screw-down crown

37 jewels