Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGH254, has a 40 mm steel case and is a limited edition of 150 pieces. The case measures 13.4 mm thick and 46.2 mm lug-to-lug, with a see-through case back. Self-winding calibre 9S85 has 37 jewels and approximately 55 hours of power reserve. A dual-curved sapphire crystal has an anti-reflective coating on the inner surface. The watch has a date display and a folding clasp with push button release. Water resistance is rated to 100 metres, and magnetic resistance is 4,800 A/m. The case has a screw-down crown and a 19 mm lug width.