The Grand Seiko SBGH353G captures the serene beauty of Japan’s clear autumn night skies during Shūbun—the sixteenth of the twenty-four sekki or seasons, marking the autumn equinox. Its deep blue dial, reminiscent of the still night sky, is illuminated by gold-toned Grand Seiko lettering and a slender golden seconds hand, mirroring how the moon and stars shimmer over Japan’s landscape in early fall. This poetic design is a celebration of both craftsmanship and nature — a core philosophy of Grand Seiko’s aesthetic.

Inspired by the original 62GS from 1967, this modern re-interpretation preserves the iconic bezel-free construction, sharp faceted lugs, and distortion-free surfaces achieved through Grand Seiko’s signature Zaratsu polishing. Crafted from Ever-Brilliant Steel, a proprietary alloy known for its exceptional brightness and corrosion resistance, the 40 mm case embodies strength and refinement.

At its heart beats the Hi-Beat Calibre 9S85, an automatic movement oscillating at 36,000 vibrations per hour, delivering remarkable accuracy of +5 to -3 seconds per day and a 55-hour power reserve. Hand-assembled at the Grand Seiko Studio Shizukuishi, this movement is visible through the see-through sapphire caseback, a testament to Japanese precision and artistry.

Key Features:

Brand: Grand Seiko
Model: Heritage Hi-Beat 36000 “Shūbun”
Reference Number: SBGH353G
Movement: Automatic, Calibre 9S85, 37 jewels, Hi-Beat 36,000 vph, 55-hour power reserve
Accuracy: +5 to -3 seconds per day (mean daily rate)
Case Material: Ever-Brilliant Steel (case and caseback)
Case Size: 40.0 mm diameter × 12.9 mm thickness × 47.0 mm lug-to-lug
Band Width: 21 mm
Crystal: Box-shaped sapphire with anti-reflective coating on the inner surface
Caseback: Sapphire see-through with screw-down construction
Dial: Deep blue inspired by Japan’s Shūbun night skies with gold-toned details
Crown: Screw-down crown
Clasp: Three-fold clasp with push-button release
Water Resistance: 100 m / 10 bar
Weight: Approx. 155 g
Condition: Brand New/Unworn

Year: 2025

Balancing poetic inspiration with precision engineering, the Grand Seiko “Shūbun” SBGH353G reflects the quiet harmony between craftsmanship and nature. With its brilliant steel case, celestial dial, and Hi-Beat movement, it stands as both a tribute to Japanese artistry and a triumph of modern horology.