Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGW323, has a steel case measuring 36.5 mm in diameter. The case measures 11.6 mm thick and 42.7 mm lug-to-lug; water resistance is rated to 100 metres; magnetic resistance is 4,800 A/m. Manual-winding calibre 9S64 has 24 jewels and approximately 72 hours of power reserve. A steel bracelet closes with a folding clasp with push button release. The purple dial combines the Mount Iwate pattern with a colour inspired by Iwate's prefectural flower. The movement has a precision of +5 to -3 seconds per day. A box-shaped sapphire crystal has an anti-reflective coating on the inner surface.