Grand Seiko Heritage

The Grand Seiko Heritage, reference SBGA509, is a Spring Drive watch with a 40 mm steel case and is a limited edition of 300 pieces. Spring Drive calibre 9R65 has 30 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, a power reserve indicator, and a see-through case back. This Heritage has a steel bracelet with a folding clasp with push button release. The dial texture takes inspiration from Japanese woodblock printing, with a theme of sunrise over Lake Suwa. The case has a thickness of 12.5 mm and a lug-to-lug span of 46.2 mm; water resistance is rated to 100 metres.