SLGA009

Main Features

SLGA009 is a White Birch model inspired by the beautiful birch forest near Shinshu Watch Studio, where Grand Seiko Spring Drive watches are made. The carefully stamped dial expresses the quiet atmosphere of the birch forest.

Movement

Caliber: 9RA2
Driving system: Spring Drive, automatic with manual winding
Power reserve: Approximately 120 hours, or about 5 days
Accuracy: Average monthly rate of ±10 seconds, equivalent to ±0.5 seconds per day

SLGA009 uses Grand Seiko’s Spring Drive Caliber 9RA2. With twin barrels, it offers approximately 120 hours of power reserve and an impressive average monthly accuracy of ±10 seconds for a mainspring-powered watch.

Exterior

Case: Stainless steel
Case back: Stainless steel and sapphire crystal
Case back: Screw-down see-through case back
Crystal: Dual-curved sapphire crystal
Coating: Anti-reflective coating on inner surface

The see-through case back allows the wearer to view the Caliber 9RA2 movement.

Size

Case size: 40.0mm diameter, 47.9mm lug-to-lug, 11.8mm thickness
Band width: 22mm
Maximum bracelet length: 196mm
Weight: 176g.

Water Resistance and Functions

Water resistance: 10 bar
Magnetic resistance: Yes
Clasp: Three-fold clasp with push button release
Other features: Power reserve indicator and screw-down crown.

White Birch Dial

The main appeal is the White Birch dial, which expresses the quiet atmosphere of a birch forest in Shinshu. Compared with SBGA443’s grayish pink Hana-Ikada dial inspired by cherry blossom petals on water, SLGA009 feels cleaner, stronger, and more architectural.

Evolution 9 Style

SLGA009 follows the Evolution 9 design language, which incorporates Japanese aesthetics such as the beauty of light and shadow. The Zaratsu-polished case, fine hairline finishing, strong hour hand, long minute hand, and grooved indexes create excellent legibility and a dignified presence.

Caliber 9RA2 with 5-Day Power Reserve

Caliber 9RA2 offers approximately 120 hours of power reserve. By placing the power reserve indicator on the back side of the movement, Grand Seiko keeps the dial clean and helps achieve a thinner case profile.

Shinshu Frost Finish

The movement features the Shinshu Frost Finish, inspired by frost-covered scenery in Shinshu during the coldest season. Blue steel screws and the blue power reserve indicator hand add a refined accent visible through the case back.

Recommended For

This model is easy to recommend for customers looking for Grand Seiko White Birch watches, Spring Drive luxury watches, 5-day power reserve watches, Evolution 9 Collection models, stainless steel everyday luxury watches, or Made in Japan craftsmanship with a nature-inspired dial.