Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGX359, has a steel case measuring 33 mm in diameter. Timekeeping is provided by quartz calibre 9F51, which operates with a precision of ±10 seconds per year. The case measures 9.1 mm thick and 39.7 mm lug-to-lug; water resistance is rated to 100 metres; magnetic resistance is 4,800 A/m; the lug width is 15 mm. A dual-curved sapphire crystal has an anti-reflective coating on the inner surface. The dial pattern takes inspiration from alpine snow sculpted by fierce winds. A steel bracelet closes with a folding clasp with push button release.