Grand Seiko Heritage Collection 41 MM Stainless Steel Spring Drive Watch SBGA203

A long-cherished and simple Spring Drive watch

A Spring Drive watch that has had a strong following ever since its release. It was the first Grand Seiko watch to be powered by Spring Drive, Grand Seiko’s unique caliber, which combines the motive force of a mainspring with the high precision of a quartz watch.

In Spring Drive, the second hand moves in perfect glide motion, reflecting the natural and continuous flow of time itself.

It has a 72-hour power reserve, and a power reserve indicator on the bottom left of the dial.

The watch face and multi-faceted hands and hour markers seem to change depending on the angle and amount of light, giving this watch its eternal appeal.

Wearers of this watch can enjoy a clear view of the movement through the see-through 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 41.0mm Lug-to-lug 49.0mm Thickness 12.5mm

Band width:    20mm

Clasp type:      Three-fold clasp with push button release

The perimeter of Band:          195mm

Movement

Caliber no.:     9R65 Instructions

Movement Type:        Spring Drive

Power reserve:           Approx. 72 hours(3 days)

Accuracy:        ±15 seconds per month (±1 second per day)

Functions

Water resistance:       10 bar

Magnetic resistance:  4,800 A/m

Other details / Features:       

Screw-down crown

30 jewels

Power reserve indicator