– Limited to 200 pieces, exclusive to Daimaru department stores in Japan (¥825,000)
– Translucent mint-green dial with a peacock feather pattern symbolizing growth
– 40mm stainless steel case using Grand Seiko’s classic 44GS design with Zaratsu polishing
– Powered by the 9R Spring Drive movement, accurate to ±15 seconds per month with 72-hour power reserve
– Japan-only release starting in early October 2026
Grand Seiko’s new SBGA523 is a limited-edition Spring Drive watch created exclusively for Japanese department store chain Daimaru. Set to release in early October 2026, the watch is limited to just 200 pieces distributed across five Daimaru locations — Shinsaibashi, Kyoto, Kobe, Tokyo, and Sapporo — and carries a retail price of ¥825,000 including tax (approximately $5,700).
Dial Design and Inspiration
The dial is what seals the deal in this collaboration. Its translucent mint-green color is overlaid with a diagonal feather pattern drawn from Daimaru’s corporate symbol, the peacock. The sweeping, upward-rising lines are a reference to growth and aspiration, and the see-through quality of the teal finish gives the dial a depth that shifts with light and viewing angle. This here creates an almost three-dimensional effect that really catches the eye from any angle you look at it from.
Case Construction and Dimensions
The case is based on Grand Seiko’s classic 44GS design lineage. It features the brand’s signature Zaratsu-polished flat surfaces that create sharp, mirror-like transitions between facets. It measures 46.2 x 40.0 mm with a thickness of 12.5 mm and is built in stainless steel. The caseback carries an individual “1 of 200” engraving alongside a display back for movement viewing, allowing collectors to observe the mechanics working behind the sapphire crystal window.
Movement and Performance
Inside sits the 9R Spring Drive caliber — Grand Seiko’s proprietary movement that uses a mainspring for power while relying on an integrated circuit and quartz oscillator to regulate timekeeping. The result is a rated accuracy of ±15 seconds per month, or roughly ±1 second per day, which is exceptional for a mechanically-driven watch. Power reserve stands at 72 hours, or about three days on a full wind. This movement is actually quite unique in the watch world because it combines traditional mechanical energy with electronic regulation for superior precision.
Availability and Market Position
The SBGA523 is a Japan-only release with no broader availability indicated yet. Because of the limited production numbers and the exclusive distribution through only five Daimaru locations, this timepiece is likely to attract strong interest from collectors both domestically and internationally who appreciate rare Grand Seiko collaborations.