Grand Seiko Hi Beat GMT Premium Boutique edition SBGJ231 (2017)
- Stainless steel case with zaratsu polishing done by hand, case size is 40mm.
- Automatic hi beat movement 9S86 with 36,000 boy.
- Power reserve at 55 hours.
- Special Premium Boutique edition available exclusively at the Ginza Boutique.
- Priced at 670,000¥