SBGA203G – Grand Seiko Heritage Collection

Posted by Kartika Winata on

“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.


Case Material :

Stainless steel

Glass Material :

Dual-curved sapphire

Glass Coating :

Anti-reflective coating on inner surface

Case size :

Diameter 41mm × Thickness 12.5mm

The perimeter of Band :


Clasp type :

Three-fold clasp with push button release


Caliber no. :


Movement Type:

Spring Drive

Power Reserve:

Approx. 72 hours (3days)


±1 second per day / ±15 seconds per month (average)


Water Resistance:

10 bar

Magnetic Resistance:



150.0 g

Other details:

30 jewels, case back with lion emblem, date display, power reserve display, screw case back, screw-down crown, see-through case back, stop second hand function

For more information:

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