Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGV221, has a steel case measuring 40 mm in diameter. Timekeeping is provided by quartz calibre 9F82, which operates with a precision of ±10 seconds per year. The watch has a date display; magnetic resistance is 4,800 A/m. Measuring 46.8 mm lug-to-lug, the case is 10 mm thick; water resistance is rated to 100 metres. A steel bracelet closes with a folding clasp with push button release; the hands and indices have chamfered edges. Above the dial is a sapphire crystal, with anti-reflective coating on its inner surface.