Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGR317, has a 40 mm steel case. Self-winding calibre 9S65 has 35 jewels and approximately 72 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 see-through case back. This Heritage has a steel bracelet with a folding clasp with push button release. The case has a thickness of 13 mm and a lug-to-lug span of 46.6 mm; water resistance is rated to 100 metres; the case has a screw-down crown; the watch has magnetic resistance.